build(deps): bump google-github-actions/deploy-appengine

Bumps [google-github-actions/deploy-appengine](https://github.com/google-github-actions/deploy-appengine) from 2.0.0 to 2.1.0.
- [Release notes](https://github.com/google-github-actions/deploy-appengine/releases)
- [Changelog](https://github.com/google-github-actions/deploy-appengine/blob/main/CHANGELOG.md)
- [Commits](google-github-actions/deploy-appengine@v2.0.0...v2.1.0)

---
updated-dependencies:
- dependency-name: google-github-actions/deploy-appengine
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/release.yml

@@ -410,7 +410,7 @@ jobs:
           service_account: ${{env.GCP_SERVICE_ACCOUNT}}
       - uses: google-github-actions/[email protected]
       - name: Deploy to App Engine
-        uses: google-github-actions/deploy-appengine@v2.0.0
+        uses: google-github-actions/deploy-appengine@v2.1.0
         with:
           deliverables: app.yaml
           project_id: hato-atama