Use Python 3.12 to be able to use match structure.

.github/workflows/generate_github_pages.yml

@@ -22,10 +22,10 @@ jobs:
         uses: gradle/actions/setup-gradle@v3
         with:
           cache-read-only: ${{ github.ref != 'refs/heads/develop' }}
-      - name: Set up Python 3.9
+      - name: Set up Python 3.12
         uses: actions/setup-python@v5
         with:
-          python-version: 3.9
+          python-version: 3.12
       - name: Run World screenshots generation script
         run: |
           ./tools/test/generateWorldScreenshots.py