chore(deps): update docker/build-push-action action to v6 (#19)

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

Author: renovate[bot]

.github/workflows/branch.yml

@@ -84,7 +84,7 @@ jobs:
             type=sha
 
       - name: Build and push
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         id: build-and-push
         with:
           load: false