Update Python version on Release configuration

Author: tbonald

.github/workflows/release.yml

@@ -44,7 +44,7 @@ jobs:
         - uses: actions/setup-python@v5
           name: Install Python
           with:
-            python-version: '3.9'
+            python-version: '3.12'
 
         - name: Build sdist
           run: |