chore(deps): update googleapis/release-please-action digest to 16a9c90

Author: renovate[bot]

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
     outputs:
       release_created: ${{ steps.release.outputs.release_created }}
     steps:
-      - uses: googleapis/release-please-action@c2a5a2bd6a758a0937f1ddb1e8950609867ed15c # v4
+      - uses: googleapis/release-please-action@16a9c90856f42705d54a6fda1823352bdc62cf38 # v4
         id: release
         with:
           token: ${{ secrets.RELEASE_PR_TOKEN }}