chore(deps): update docker/build-push-action action to v6 (#60)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yml

@@ -59,7 +59,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Build and push to GitHub
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: ./
           file: ./Dockerfile