Upgrade example version to 0.4.0 (#40)

Author: sulunemre

.github/workflows/example-workflow.yaml

@@ -47,7 +47,7 @@ jobs:
         
     - name: Deploy to Cloud Run
       id: deploy
-      uses: google-github-actions/deploy-cloudrun@v0.2.0
+      uses: google-github-actions/deploy-cloudrun@v0.4.0
       with:
         service: ${{ env.SERVICE }}
         image: gcr.io/${{ env.PROJECT_ID }}/${{ env.SERVICE }}:${{  github.sha }}