fix workflow: upgrade "build and push" action version to the latest

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ jobs:
 
       # Runs a single command using the runners shell
       - name: Build and push Docker images to docker.io and ghcr.io
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v4
         with:
           file: './application/Dockerfile'
           platforms: linux/amd64

.github/workflows/cife.yml

@@ -37,7 +37,7 @@ jobs:
 
       # Runs a single command using the runners shell
       - name: Build and push Docker images to docker.io and ghcr.io
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v4
         with:
           file: './frontend/Dockerfile'
           platforms: linux/amd64