use python 3.11

Author: brokkoli71

.github/workflows/ci.yml

@@ -28,6 +28,11 @@ jobs:
           distribution: 'temurin'
           cache: maven
 
+      - name: Set up Python 3.11
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+
       - name: Install uv
         uses: astral-sh/setup-uv@v6