Bump error_prone_annotations from 2.14.0 to 2.15.0

Bumps [error_prone_annotations](https://github.com/google/error-prone) from 2.14.0 to 2.15.0.
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](https://github.com/google/error-prone/compare/v2.14.0...v2.15.0)

---
updated-dependencies:
- dependency-name: com.google.errorprone:error_prone_annotations
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
1 file changed