Bump docker/build-push-action from 5 to 6 (#164)

Author: dependabot[bot]

.github/workflows/push.yaml

@@ -43,7 +43,7 @@ jobs:
         images: ${{ github.repository_owner }}/governor
 
     - name: Build and push
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         context: .
         file: ./Dockerfile