chore(deps): update docker/build-push-action action to v6.12.0

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

Author: renovate[bot]

.github/workflows/release.container.yml

@@ -27,7 +27,7 @@ jobs:
           images: ghcr.io/${{ github.repository }}
           labels: |
             org.opencontainers.image.licenses=CeCILL-2.1
-      - uses: docker/build-push-action@48aba3b46d1b1fec4febb7c5d0c644b249a11355 # v6.10.0
+      - uses: docker/build-push-action@67a2d409c0a876cbe6b11854e3e25193efe4e62d # v6.12.0
         with:
           context: .
           platforms: linux/amd64,linux/arm64