Merge pull request #2870 from github/mbg/ci/retire-ubuntu-20.04

Remove ubuntu-20.04 and add ubuntu-24.04

Author: mbg

.github/workflows/codeql.yml

@@ -75,7 +75,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04,ubuntu-22.04,windows-2019,windows-2022,macos-13,macos-14]
+        os: [ubuntu-22.04,ubuntu-24.04,windows-2019,windows-2022,macos-13,macos-14]
         tools: ${{ fromJson(needs.check-codeql-versions.outputs.versions) }}
     runs-on: ${{ matrix.os }}