build(deps-dev): bump release-please from 16.12.0 to 16.15.0

Bumps [release-please](https://github.com/googleapis/release-please) from 16.12.0 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@v16.12.0...v16.15.0)

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

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

Author: dependabot[bot]

Diff for: package.json

@@ -43,7 +43,7 @@
     "eslint-plugin-prettier": "5.2.1",
     "nyc": "17.1.0",
     "prettier": "3.3.3",
-    "release-please": "16.12.0",
+    "release-please": "16.15.0",
     "vitest": "3.0.5"
   }
 }