Update docker/build-push-action action to v6 (#10)

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

Author: renovate[bot]

.github/workflows/release.yaml

@@ -135,7 +135,7 @@ jobs:
           username: ${{ secrets.SQNC_DOCKERHUB_USERNAME }}
           password: ${{ secrets.SQNC_DOCKERHUB_TOKEN }}
       - name: Build image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           builder: ${{ steps.buildx.outputs.name }}
           context: .