Correct GitHub Actions Cache version

Author: wang-arthur

.github/workflows/azure-container-webapp.yml

@@ -72,7 +72,7 @@ jobs:
           echo "GIT_EMAIL=$email" >> $GITHUB_ENV
 
       - name: Cache Docker Layers
-        uses: actions/cache@v4
+        uses: actions/cache@v3.4.3
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}