Merge pull request #18 from stackitcloud/renovate/docker-setup-buildx-action-3.x

chore(deps): update docker/setup-buildx-action action to v3

Author: PatrickKoss

.github/workflows/release.yaml

@@ -40,7 +40,7 @@ jobs:
       - uses: anchore/sbom-action/download-syft@78fc58e266e87a38d4194b2137a3d4e9bcaf7ca1 # v0.14.3
 
       - name: Set Up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       - name: Set up Cosign
         uses: sigstore/cosign-installer@v3.1.2