Prepare for v4.18.4 release (#3352)

### Changed

- [nodejs] Resolves `punycode` deprecation warnings by using native
`fetch` instead of `node-fetch`.
  (#3301)

### Fixed

- `pulumi.com/waitFor` and other await annotations now correctly take
precedence over default await logic.
  (#3329)

- JSONPath expressions used with the `pulumi.com/waitFor` annotation
will no longer hang indefinitely if they match non-primitive fields.
  (#3345)

- [java] CRDs that contain any `x-kubernetes-*` fields can now be
succesfully created and managed by Pulumi.
  (#3325)

CHANGELOG.md

@@ -1,5 +1,7 @@
 ## Unreleased
 
+## 4.18.4 (December 5, 2024)
+
 ### Changed
 
 - [nodejs] Resolves `punycode` deprecation warnings by using native `fetch` instead of `node-fetch`.