Merge pull request #32 from netbootxyz/renovate/docker-build-push-action-6.x

Update docker/build-push-action action to v6

Author: antonym

.github/workflows/core.yml

@@ -39,7 +39,7 @@ jobs:
         password: ${{ secrets.GITHUB_TOKEN }}
 
     - name: Build and push image
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         push: true
         context: .