pipeline: upgrade runner from ubuntu v20.04 to v24.04

.github/workflows/python.yml

@@ -14,7 +14,7 @@ on:
 
 jobs:
   code-format:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         python-version: ['3.11']
@@ -30,7 +30,7 @@ jobs:
     - run: pipenv graph
     - run: pipenv run black --check .
   tests:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         python-version:
@@ -64,7 +64,7 @@ jobs:
     - run: pipenv run pylint tests/*
     - run: pipenv run mypy "$(cat *.egg-info/top_level.txt)" tests
   check-links:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         python-version: ['3.9']