fix: bump release-please from 16.14.1 to 16.15.0

Bumps [release-please](https://github.com/googleapis/release-please) from 16.14.1 to 16.15.0.
- [Release notes](https://github.com/googleapis/release-please/releases)
- [Changelog](https://github.com/googleapis/release-please/blob/main/CHANGELOG.md)
- [Commits](googleapis/release-please@v16.14.1...v16.15.0)

---
updated-dependencies:
- dependency-name: release-please
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -29,7 +29,7 @@
   "homepage": "https://github.com/bcoe/release-please-action#readme",
   "dependencies": {
     "@actions/core": "^1.10.0",
-    "release-please": "^16.14.1"
+    "release-please": "^16.15.0"
   },
   "devDependencies": {
     "@types/mocha": "^9.0.0",