Pin uv

Author: gewenyu99

.github/workflows/generate-references.yaml

@@ -24,7 +24,7 @@ jobs:
           python-version: 3.11.11
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@0c5e2b8115b80b4c7c5ddf6ffdd634974642d182 # v5.4.1
         with:
             enable-cache: true
             pyproject-file: 'pyproject.toml'