Bump docker/build-push-action from 6.4.0 to 6.4.1 in the ci group

Bumps the ci group with 1 update: [docker/build-push-action](https://github.com/docker/build-push-action).


Updates `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
  dependency-group: ci
...

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

Author: dependabot[bot]

.github/workflows/nightly.yaml

@@ -22,7 +22,7 @@ jobs:
         id: buildx
         uses: docker/setup-buildx-action@4fd812986e6c8c2a69e18311145f9371337f27d4 # v3.4.0
       - name: Build multi-arch container image
-        uses: docker/build-push-action@a254f8ca60a858f3136a2f1f23a60969f2c402dd # v6.4.0
+        uses: docker/build-push-action@1ca370b3a9802c92e886402e0dd88098a2533b12 # v6.4.1
         with:
           push: false
           builder: ${{ steps.buildx.outputs.name }}

.github/workflows/release.yml

@@ -68,7 +68,7 @@ jobs:
             type=raw,value=${{ steps.prep.outputs.VERSION }}
       - name: Publish images
         id: build-push
-        uses: docker/build-push-action@a254f8ca60a858f3136a2f1f23a60969f2c402dd # v6.4.0
+        uses: docker/build-push-action@1ca370b3a9802c92e886402e0dd88098a2533b12 # v6.4.1
         with:
           sbom: true
           provenance: true