Add summary of changes for v2.15

docs/whats-new/release-notes/v2_15_0.md

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+# Version 2.15.0 (March 2024)
+
+Welcome to the Zowe Version 2.15.0 release!
+
+See [New features and enhancements](#new-features-and-enhancements) for a full list of changes to the functionality. See [Bug fixes](#bug-fixes) for a list of issues addressed in this release.
+
+**Download v2.15.0 build**: Want to try new features as soon as possible? You can download the v2.15.0 build from [Zowe.org](https://www.zowe.org/download.html).
+
+## New features and enhancements
+
+Zowe Version 2.15.0 contains the enhancements that are described in the following topics.
+
+:::info find out more
+To watch a demo of new enhancements and updated features included in a Zowe minor release, look for the release demo recording in the [Zowe V2 System Demo playlist](https://www.youtube.com/playlist?list=PL8REpLGaY9QGjSTAqZaWxLG_g-jW1qGmo) on YouTube.
+
+System demos are typically held the week after a minor release becomes available. Check the [Open Mainframe Project Calendar](https://lists.openmainframeproject.org/g/zowe-dev/calendar) for the latest schedule.
+:::
+
+### Zowe API Mediation Layer
+
+- Timeout configuration values of the websocket webclient are now supported in the API Gateway. ([#3315](https://github.com/zowe/api-layer/issues/3315))
+
+### Zowe CLI
+
+#### Zowe CLI (Core)
+
+- Added `--binary` and `--encoding` options to the `zos-files edit` command in Zowe CLI V2, allowing users to download and edit binary files and data sets, or to edit files and data sets with a user-specified encoding. ([#1725](https://github.com/zowe/zowe-cli/issues/1725))
+
+- Hid the progress bar if the `CI` environment variable is set, or if the `FORCE_COLOR` environment variable is set to `0`, to prevent the progress bar from displaying improperly in some cases. ([#1845](https://github.com/zowe/zowe-cli/issues/1845))
+
+#### Zowe CLI Imperative Framework
+
+- Added multiple APIs to the `ProfileInfo` class to help manage schemas between client applications. ([Zowe CLI #2012](https://github.com/zowe/zowe-cli/issues/2012))
+
+- Hid the progress bar if the `CI` environment variable is set, or if the `FORCE_COLOR` environment variable is set to `0`, to prevent the progress bar from displaying improperly in some cases.. ([Zowe CLI #1845](https://github.com/zowe/zowe-cli/issues/1845))
+
+#### IMS Plug-in for Zowe CLI
+
+- Deprecated the IMS Plug-in for Zowe CLI due to compatibility issues between the plug-in, the Zowe IMS Operations API, and IBM IMS running on the mainframe.
+
+- Added notices in documentation announcing the deprecation of the IMS Plug-in for Zowe CLI. ([#66](https://github.com/zowe/zowe-cli-ims-plugin/pull/66))
+
+#### z/OS FTP Plug-in for Zowe CLI
+
+- Updated the version of zos-node-accessor to 1.0.16. ([#149](https://github.com/zowe/zowe-cli-ftp-plugin/pull/149))
+
+### Zowe Explorer
+
+#### Zowe Explorer (Core)
+
+- See the [Zowe Explorer](https://github.com/zowe/vscode-extension-for-zowe/blob/main/packages/zowe-explorer/CHANGELOG.md) changelog for updates included in this release.
+
+#### Zowe Explorer API
+
+- See the [Zowe Explorer API](https://github.com/zowe/vscode-extension-for-zowe/blob/main/packages/zowe-explorer-api/CHANGELOG.md) changelog for updates included in this release.
+
+#### Zowe Explorer FTP Extension
+
+- See the [Zowe Explorer FTP Extension](https://github.com/zowe/vscode-extension-for-zowe/blob/main/packages/zowe-explorer-ftp-extension/CHANGELOG.md) changelog for updates included in this release.
+
+#### Zowe Explorer ESLint Plug-in
+
+- See the [Zowe Explorer ESLint Plug-in](https://github.com/zowe/vscode-extension-for-zowe/blob/main/packages/eslint-plugin-zowe-explorer/CHANGELOG.md) changelog for updates included in this release.
+
+## Bug fixes
+
+Zowe Version 2.15.0 contains the bug fixes that are described in the following topics.
+
+### Zowe installation and packaging
+- `zwe diagnose` has been updated to use `configmgr`([#3627](https://github.com/zowe/zowe-install-packaging/issues/3627))
+
+### Zowe Application Framework
+
+#### Zowe Common C
+- Removed obsolete building script `build_configmgr.sh`. ([#410](https://github.com/zowe/zowe-common-c/issues/410)) and ([#423](https://github.com/zowe/zowe-common-c/pull/423))
+
+#### Zlux Server Framework
+- App-server is now able to merge `HTTPS` and `HTTP` addresses and can run in `HTTP` mode for `AT-TLS` setup. ([#532](https://github.com/zowe/zlux-server-framework/pull/532))
+
+### Zowe API Mediation Layer
+
+ -Displaying the base path in API Catalog has been fixed. ([#3297](https://github.com/zowe/api-layer/issues/3297))
+- Disabling EhCache using `apiml.caching.enabled=false` has been fixed. ([#3280](https://github.com/zowe/api-layer/issues/3280))
+
+### Zowe CLI
+
+#### Zowe CLI (Core)
+
+- Fixed race condition in the `config convert-profiles` command that may fail to delete secure values for old profiles.
+
+- Resolved technical currency by updating `socks` transitive dependency. ([#2049](https://github.com/zowe/zowe-cli/pull/2049))
+
+- Updated zos-files copy dsclp system tests to include large mock files. This improves system test coverage for edge cases involving large data sets. ([#2023](https://github.com/zowe/zowe-cli/pull/2023))
+
+#### Zowe CLI Imperative Framework
+
+- Fixed race condition in the `config convert-profiles` command that may fail to delete secure values for old profiles. ([Zowe CLI #2055](https://github.com/zowe/zowe-cli/pull/2055))
+
+- Resolved issue in `ProfileInfo` where schema comparisons fail, specifically when comparing the cached schema against a command-based schema during registration. ([Zowe CLI #2045](https://github.com/zowe/zowe-cli/pull/2045))
+
+- Resolved technical currency by updating `socks` transitive dependency. ([Zowe CLI #2049](https://github.com/zowe/zowe-cli/pull/2049))
+
+- Updated `mustache` and `jsonschema` dependencies for technical currency. ([Zowe CLI #2024](https://github.com/zowe/zowe-cli/pull/2024))
+
+- Fixed issue where secure property names could be returned for the wrong profile. ([Zowe Explorer #2633](https://github.com/zowe/vscode-extension-for-zowe/issues/2633))
+
+- Fixed issue when a property is not found in `ProfileInfo.updateProperty({forceUpdate: true})` so extenders can set or update a property in a team configuration even if it is not defined in the schema without their application/extension failing. ([Zowe Explorer #2493](https://github.com/zowe/vscode-extension-for-zowe/issues/2493))
+
+#### IMS Plug-in for Zowe CLI
+
+- Added missing shrinkwrap to specify versions of dependencies installed with the plug-in. ([#65](https://github.com/zowe/zowe-cli-ims-plugin/pull/65))
+
+#### z/OS FTP Plug-in for Zowe CLI
+
+- Fixed an issue specific to Windows where uploading a data set with JCL content hangs, preventing further actions through the zFTP VSCode Extension. ([#2533](https://github.com/zowe/vscode-extension-for-zowe/issues/2533))
+
+### Zowe Explorer
+
+#### Zowe Explorer (Core)
+
+- See the [Zowe Explorer](https://github.com/zowe/vscode-extension-for-zowe/blob/main/packages/zowe-explorer/CHANGELOG.md) changelog for updates included in this release.
+
+#### Zowe Explorer API
+
+- See the [Zowe Explorer API](https://github.com/zowe/vscode-extension-for-zowe/blob/main/packages/zowe-explorer-api/CHANGELOG.md) changelog for updates included in this release.
+
+#### Zowe Explorer FTP Extension
+
+- See the [Zowe Explorer FTP Extension](https://github.com/zowe/vscode-extension-for-zowe/blob/main/packages/zowe-explorer-ftp-extension/CHANGELOG.md) changelog for updates included in this release.
+
+#### Zowe Explorer ESLint Plug-in
+
+- See the [Zowe Explorer ESLint Plug-in](https://github.com/zowe/vscode-extension-for-zowe/blob/main/packages/eslint-plugin-zowe-explorer/CHANGELOG.md) changelog for updates included in this release.
+
+### Vulnerabilities fixed
+
+