ci(deps): bump docker/build-push-action from 6.4.0 to 6.4.1

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.4.0 to 6.4.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@a254f8c...1ca370b)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/rootfs.yaml

@@ -44,7 +44,7 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@4fd812986e6c8c2a69e18311145f9371337f27d4 # v3.4.0
       - name: Build Image
-        uses: docker/build-push-action@a254f8ca60a858f3136a2f1f23a60969f2c402dd # v6.4.0
+        uses: docker/build-push-action@1ca370b3a9802c92e886402e0dd88098a2533b12 # v6.4.1
         with:
           platforms: linux/${{ matrix.arch }}
           push: false