setup-gcloud fix

Author: simonw

.github/workflows/deploy-demo.yml

@@ -17,7 +17,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v1
       with:
-        python-version: "3.10"
+        python-version: "3.9"
     - uses: actions/cache@v1
       name: Configure pip caching
       with:
@@ -97,7 +97,7 @@ jobs:
     - name: Set up Cloud Run
       uses: google-github-actions/setup-gcloud@v0
       with:
-        version: '275.0.0'
+        version: '318.0.0'
         service_account_email: ${{ secrets.GCP_SA_EMAIL }}
         service_account_key: ${{ secrets.GCP_SA_KEY }}
     - name: Deploy to Cloud Run