Fix Health Metrics GitHub Actions bots. Fixes issue #6097. (#6098)

Author: ehsannas

.github/workflows/health-metrics-pull-request.yml

@@ -24,7 +24,7 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: 14.x
-      - uses: google-github-actions/setup-gcloud@master
+      - uses: google-github-actions/setup-gcloud@v0
         with:
           service_account_key: ${{ secrets.GCP_SA_KEY }}
       - run: yarn install
@@ -40,7 +40,7 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: 14.x
-      - uses: google-github-actions/setup-gcloud@master
+      - uses: google-github-actions/setup-gcloud@v0
         with:
           service_account_key: ${{ secrets.GCP_SA_KEY }}
       - run: yarn install