chore(deps): update docker/metadata-action action to v6

.gitea/workflows/release.yml

@@ -67,7 +67,7 @@ jobs:
           ref: ${{ needs.tag.outputs.tag_name }}
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+        uses: docker/setup-buildx-action@v3
 
       - name: Log in to Gitea Container Registry
         uses: docker/login-action@v4
@@ -85,7 +85,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           tags: type=semver,pattern=v{{version}},value=${{ needs.tag.outputs.tag_name }}
           images: |