Bump docker/setup-buildx-action from 2.3.0 to 2.4.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2.3.0 to 2.4.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@v2.3.0...v2.4.0)

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

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Docker Setup Buildx
-        uses: docker/setup-buildx-action@v2.3.0
+        uses: docker/setup-buildx-action@v2.4.0
 
       # Check out current repository
       - name: Fetch Sources