Update generator.yml

Author: xaoxuu

.github/workflows/generator.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v1
       with:
-        python-version: 3.8
+        python-version: 3.12.8
     - name: Install requirements
       run: |
         pip install -r requirements.txt