Get CI off of about-to-be-removed Ubuntu 20.04

Author: hartwork

.github/workflows/run_pre_commit.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   run_pre_commit:
     name: Run pre-commit on all files
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
 

.github/workflows/run_tox.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   run_tox:
     name: Run tox
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         python-version: