added python install step

.github/workflows/dev_cloudrun.yml

@@ -66,17 +66,19 @@ jobs:
       - name: Checkout the code
         uses: actions/checkout@v2
 
-      - uses: actions/setup-python@v4
-        with:
-          python-version: '3.11'
+      - name: Install Python 3.11
+        run: |
+          sudo apt update
+          sudo apt install python3.11
+          python3.11 --version
 
       - name: Run unit test
         run: python3 -m unittest discover -s tests
 
   # <------------------ DEPLOY APP to GCP ------------------->
   deploy-app:
     name: Deploy app
-    needs: build-image
+    needs: [ build-image, unit-test ]
     runs-on: self-hosted
     outputs:
       env_url: ${{ steps.deploy.outputs.url }}