Switch to specific ubuntu tag

[rahearn]

Story

As a devsecops engineer, I would like to have a more locked down image versioning strategy, So that I can more easily answer compliance questions without raising flags, and not have surprising updates forced on me

Solution

### Tasks
- [x] Switch default CI image from `ubuntu:latest` to `ubuntu:24.04` (currently identical images)
- [x] Update SSPP Table 10.3 with new version information

Acceptance Criteria

• [x] CI runs use ubuntu 24.04 by default
• [x] devtools-compliance repo has been updated and SSPP regenerated

[rahearn]

Going to hold off on this until after table 10.3 initial updates have been merged as part of https://github.com/GSA-TTS/devtools-compliance/issues/28