Bump docker/setup-buildx-action from 2.4.0 to 2.4.1 (#409)

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2.4.0 to 2.4.1.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@15c905b...f03ac48)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -161,7 +161,7 @@ jobs:
           path: ${{ github.workspace }}/dist
           key: nginx-kubernetes-gateway-${{ github.run_id }}-${{ github.run_number }}
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@15c905b16b06416d2086efa066dd8e3a35cc7f98 # v2.4.0
+        uses: docker/setup-buildx-action@f03ac48505955848960e80bbb68046aa35c7b9e7 # v2.4.1
       - name: Setup QEMU
         uses: docker/setup-qemu-action@e81a89b1732b9c48d79cd809d8d81d79c4647a18 # v2.1.0
         with: