chore: bump google-github-actions/auth from 2 to 3 (#3743)

Author: dependabot[bot]

.github/workflows/post_publish.yml

@@ -14,7 +14,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Authenticate with Google Cloud
-        uses: google-github-actions/auth@v2
+        uses: google-github-actions/auth@v3
         with:
           project_id: denoland
           credentials_json: ${{ secrets.GCP_SA_KEY }}