bump ci ubuntu for docs

Author: willingc

.github/workflows/ci.yml

@@ -42,7 +42,7 @@ jobs:
         uses: codecov/codecov-action@v4
 
   others:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
@@ -53,7 +53,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.11
+          python-version: 3.12
       - name: "Install dependencies"
         run: |
           set -xe