Bump docker/setup-buildx-action from 3.8.0 to 3.9.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 3.8.0 to 3.9.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v3.8.0...v3.9.0)

---
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]>

.github/workflows/docker-publish.yml

@@ -20,7 +20,7 @@ jobs:
         uses: docker/setup-qemu-action@v3
 
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@v3.8.0
+        uses: docker/setup-buildx-action@v3.9.0
 
       - name: Build
         run: docker build -t gameservermanagers/steamcmd:ubuntu-24.04 -f ./Dockerfile.ubuntu-2404 .
@@ -64,7 +64,7 @@ jobs:
         uses: docker/setup-qemu-action@v3
 
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@v3.8.0
+        uses: docker/setup-buildx-action@v3.9.0
 
       - name: Build
         run: docker build -t gameservermanagers/steamcmd:ubuntu-22.04 -f ./Dockerfile.ubuntu-2204 .
@@ -104,7 +104,7 @@ jobs:
         uses: docker/setup-qemu-action@v3
 
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@v3.8.0
+        uses: docker/setup-buildx-action@v3.9.0
 
       - name: Build
         run: docker build -t gameservermanagers/steamcmd:ubuntu-20.04 -f ./Dockerfile.ubuntu-2004 .
@@ -144,7 +144,7 @@ jobs:
         uses: docker/setup-qemu-action@v3
 
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@v3.8.0
+        uses: docker/setup-buildx-action@v3.9.0
 
       - name: Build
         run: docker build -t gameservermanagers/steamcmd:ubuntu-18.04 -f  ./Dockerfile.ubuntu-1804 .