Mini-RCA doc: ubuntu-latest issues on edx-platform

October 9 (overnight):

edx-platform build started failing when ubuntu-latest rolled over from 22.04 to 24.04:
- successful job: https://github.com/openedx/edx-platform/actions/runs/11259041794/job/31307080355
unsuccessful jobs were running to two issues:
- undefined symbol: xmlSecOpenSSLTransformRsaMd5GetKlass
  - example job: https://github.com/openedx/edx-platform/actions/runs/11260701749/job/31312499485?pr=35621
- mongodb-org-mongos : Depends: libssl1.1 (>= 1.1.1) but it is not installable
  - example job: https://github.com/openedx/edx-platform/actions/runs/11260701752/job/31312503068?pr=35621

October 10:

2U attempts to fix this issue by upgrading mongo to use the jammy repositories (the fo