Use --only-group instead of --group

Author: insolor

.github/workflows/deploy-docs.yml

@@ -32,7 +32,7 @@ jobs:
           version: latest
 
       - name: Install dependencies
-        run: uv sync --only docs
+        run: uv sync --only-group docs
 
       - name: Deploy docs
         run: uv run mkdocs gh-deploy --force