fix: Use py3.11 as it still ships pkg_resources by default which docs…

…tr-coverage needs

.github/workflows/CI.yml

@@ -133,10 +133,10 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Set up Python 3.x
+      - name: Set up Python 3.11
         uses: actions/setup-python@v4
         with:
-          python-version: "3.x"
+          python-version: "3.11"
           cache: "pip"
           cache-dependency-path: |
             .github/workflows/requirements.docstr-cov.txt