build(deps): bump docker/setup-buildx-action from 3.6.1 to 3.7.1 (exercism#198)

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 3.6.1 to 3.7.1.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@988b5a0...c47758b)

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

Author: dependabot[bot]

.github/workflows/docker-build-push-image.yml

@@ -78,7 +78,7 @@ jobs:
 
       - name: Set up Docker Buildx
         if: steps.dockerfile-exists.outputs.result == 'true'
-        uses: docker/setup-buildx-action@988b5a0280414f521da01fcc63a27aeeb4b104db
+        uses: docker/setup-buildx-action@c47758b77c9736f4b2ef4073d4d51994fabfe349
 
       - name: Login to DockerHub
         uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567