Drop Ubuntu 20

Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

.github/workflows/about-files-ci.yml

@@ -7,16 +7,16 @@ permissions:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
 
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [3.9]
+        python-version: [3.11]
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4