build(deps): update googleapis/release-please-action digest to 16a9c90 (#596)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -68,7 +68,7 @@ jobs:
       - id: release
         name: Release
         if: ${{ !github.event.inputs.skip_release }}
-        uses: googleapis/release-please-action@c2a5a2bd6a758a0937f1ddb1e8950609867ed15c # v4
+        uses: googleapis/release-please-action@16a9c90856f42705d54a6fda1823352bdc62cf38 # v4
         with:
           release-type: node
       - id: checkout