deps: Update google-github-actions/auth action to v2 (#174)

Author: renovate-bot

.github/workflows/tests.yaml

@@ -76,7 +76,7 @@ jobs:
 
       - id: 'auth'
         name: Authenticate to Google Cloud
-        uses: google-github-actions/auth@f105ef0cdb3b102a020be1767fcc8a974898b7c6 # v1.2.0
+        uses: google-github-actions/auth@67e9c72af6e0492df856527b474995862b7b6591 # v2.0.0
         with:
           workload_identity_provider: ${{ secrets.PROVIDER_NAME }}
           service_account: ${{ secrets.SERVICE_ACCOUNT }}
@@ -154,7 +154,7 @@ jobs:
 
       - id: 'auth'
         name: 'Authenticate to Google Cloud'
-        uses: google-github-actions/auth@f105ef0cdb3b102a020be1767fcc8a974898b7c6 # v1.2.0
+        uses: google-github-actions/auth@67e9c72af6e0492df856527b474995862b7b6591 # v2.0.0
         with:
           workload_identity_provider: ${{ secrets.PROVIDER_NAME }}
           service_account: ${{ secrets.SERVICE_ACCOUNT }}