build(deps): bump GoogleCloudPlatform/release-please-action from 3 to 4 (#467)

Bumps [GoogleCloudPlatform/release-please-action](https://github.com/googlecloudplatform/release-please-action) from 3 to 4.
- [Release notes](https://github.com/googlecloudplatform/release-please-action/releases)
- [Changelog](https://github.com/googleapis/release-please-action/blob/main/CHANGELOG.md)
- [Commits](googleapis/release-please-action@v3...v4)

---
updated-dependencies:
- dependency-name: GoogleCloudPlatform/release-please-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Diff for: .github/workflows/release-please.yml

@@ -14,7 +14,7 @@ jobs:
         with:
           submodules: recursive
 
-      - uses: GoogleCloudPlatform/release-please-action@v3
+      - uses: GoogleCloudPlatform/release-please-action@v4
         id: release_main
         with:
           release-type: rust