Add Python version for prepare-dist in release.yml

Author: TD-er

.github/workflows/release.yml

@@ -71,6 +71,8 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
+        with:
+          python-version: '3.13'
       - name: Build documentation
         run: |
           cd docs