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

Author: renovate[bot]

.github/workflows/publish-to-ghcr.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
       - name: Build & Push Images
         shell: bash
         working-directory: docker