Update docker/build-push-action action to v4

Author: renovate[bot]

.github/workflows/pull_request.yml

@@ -56,7 +56,7 @@ jobs:
         echo IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
 
     - name: Build and push
-      uses: docker/build-push-action@v2
+      uses: docker/build-push-action@v4
       with:
         context: .
         file: ${{ env.DOCKER_FILE_PATH  }}

.github/workflows/push.yml

@@ -62,7 +62,7 @@ jobs:
         echo IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
 
     - name: Build and push
-      uses: docker/build-push-action@v2
+      uses: docker/build-push-action@v4
       with:
         context: .
         file: ${{ env.DOCKER_FILE_PATH  }}