Bump docker/setup-buildx-action from 2 to 3

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2 to 3.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v2...v3)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/docker-ci.yml

@@ -21,7 +21,7 @@ jobs:
 
       # https://github.com/marketplace/actions/docker-setup-buildx
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       # https://github.com/docker/build-push-action#multi-platform-image
       - name: Build and push to Docker Hub

.github/workflows/docker-publish.yml

@@ -35,7 +35,7 @@ jobs:
 
       # https://github.com/marketplace/actions/docker-setup-buildx
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       # https://github.com/docker/login-action#docker-hub
       - name: Login to Docker Hub