Bump pipenv from 2018.11.26 to 2021.5.29 in /python/helpers

[dependabot-preview]

Bumps pipenv from 2018.11.26 to 2021.5.29.

Release notes

Sourced from pipenv's releases.

Release v2021.5.29

No release notes provided.

Release v2020.11.15

No release notes provided.

Release v2020.11.4

No release notes provided.

Release v2020.8.13

Bug Fixes

• Fixed behaviour of pipenv uninstall --all-dev. From now on it does not uninstall regular packages. [#3722](https://github.com/pypa/pipenv/issues/3722) <https://github.com/pypa/pipenv/issues/3722>_
• Fix a bug that incorrect Python path will be used when --system flag is on. [#4315](https://github.com/pypa/pipenv/issues/4315) <https://github.com/pypa/pipenv/issues/4315>_
• Fix falsely flagging a Homebrew installed Python as a virtual environment [#4316](https://github.com/pypa/pipenv/issues/4316) <https://github.com/pypa/pipenv/issues/4316>_
• Fix a bug that pipenv uninstall throws an exception that does not exist. [#4321](https://github.com/pypa/pipenv/issues/4321) <https://github.com/pypa/pipenv/issues/4321>_
• Fix a bug that Pipenv can't locate the correct file of special directives in setup.cfg of an editable package. [#4335](https://github.com/pypa/pipenv/issues/4335) <https://github.com/pypa/pipenv/issues/4335>_
• Fix a bug that setup.py can't be parsed correctly when the assignment is type-annotated. [#4342](https://github.com/pypa/pipenv/issues/4342) <https://github.com/pypa/pipenv/issues/4342>_
• Fix a bug that pipenv graph throws an exception that PipenvCmdError(cmd_string, c.out, c.err, return_code). [#4388](https://github.com/pypa/pipenv/issues/4388) <https://github.com/pypa/pipenv/issues/4388>_
• Do not copy the whole directory tree of local file package. [#4403](https://github.com/pypa/pipenv/issues/4403) <https://github.com/pypa/pipenv/issues/4403>_
• Correctly detect whether Pipenv in run under an activated virtualenv. [#4412](https://github.com/pypa/pipenv/issues/4412) <https://github.com/pypa/pipenv/issues/4412>_

Vendored Libraries

• Update requirementslib to 1.5.12. [#4385](https://github.com/pypa/pipenv/issues/4385) <https://github.com/pypa/pipenv/issues/4385>_
• • Update requirements to 1.5.13.
  • Update pip-shims to 0.5.3. [#4421](https://github.com/pypa/pipenv/issues/4421) <https://github.com/pypa/pipenv/issues/4421>_

Release v2020.6.2

2020.6.2 (2020-06-02)

Features & Improvements

• Pipenv will now detect existing venv and virtualenv based virtual environments more robustly. #4276

Bug Fixes

• + signs in URL authentication fragments will no longer be incorrectly replaced with space ( ) characters. #4271
• Fixed a regression which caused Pipenv to fail when running under /. #4273
• setup.py files with version variables read from os.environ are now able to be parsed successfully. #4274
• Fixed a bug which caused Pipenv to fail to install packages in a virtual environment if those packages were already present in the system global environment. #4276
• Fix a bug that caused non-specific versions to be pinned in Pipfile.lock. #4278
• Corrected a missing exception import and invalid function call invocations in pipenv.cli.command. #4286
• Fixed an issue with resolving packages with names defined by function calls in setup.py. #4292

... (truncated)

Changelog

Sourced from pipenv's changelog.

2021.5.29 (2021-05-29)

Bug Fixes

• Fix a bug where passing --skip-lock when PIPFILE has no [SOURCE] section throws the error: "tomlkit.exceptions.NonExistentKey: 'Key "source" does not exist.'" #4141
• Fix bug where environment wouldn't activate in paths containing & and $ symbols #4538
• Fix a bug that importlib-metadata from the project's dependencies conflicts with that from pipenv's. #4549
• Fix a bug where pep508checker.py did not expect double-digit Python minor versions (e.g. "3.10"). #4602
• Fix bug where environment wouldn't activate in paths containing () and [] symbols #4615
• Fix bug preventing use of pipenv lock --pre #4642

Vendored Libraries

• Update packaging from 20.4 to 20.8. #4591

2020.11.15 (2020-11-15)

Features & Improvements

• Support expanding environment variables in requirement URLs. #3516
• Show warning message when a dependency is skipped in locking due to the mismatch of its markers. #4346

Bug Fixes

• Fix a bug that executable scripts with leading backslash can't be executed via pipenv run. #4368
• Fix a bug that VCS dependencies always satisfy even if the ref has changed. #4387
• Restrict the acceptable hash type to SHA256 only. #4517
• Fix the output of pipenv scripts under Windows platform. #4523
• Fix a bug that the resolver takes wrong section to validate constraints. #4527

Vendored Libraries

Update vendored dependencies:
:   -   colorama from 0.4.3 to 0.4.4
-   python-dotenv from 0.10.3 to 0.15.0
-   first from 2.0.1 to 2.0.2
-   iso8601 from 0.1.12 to 0.1.13
-   parse from 1.15.0 to 1.18.0
-   pipdeptree from 0.13.2 to 1.0.0
-   requests from 2.23.0 to 2.25.0

... (truncated)

Commits

• 72835f1 Fix release workflow
• 139b820 Release v2021.5.29
• e7fb099 Merge pull request #4688 from NaelsonDouglas/master
• 66ca25f Merge pull request #4692 from mikepsinn/master
• eaa45c6 Merge pull request #4694 from davidjb/patch-3
• a989001 Add #egg fragment to URL in VCS docs
• ba97e4f Windows install command
• ccc18a6 Small refactoration removing two avoidable indexer iterator
• 6cdfa21 Update pypi artifacts
• c81b165 Merge pull request #4652 from nid5/4642-fix
• Additional commits viewable in compare view

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