Update version.rb

• Diff: v7.24.6...955183ba

• Release notes:

### New scenarios and scenario updates

- !894 Add Registry with CDN scenario
- !896 Add test data seed step to gitlab component

### Other changes (CI, backstage)

- !897 Allow registry_with_cdn jobs to fail

• Checklist before merging:

  • Diff link is up-to-date.
  • Based on the diff, lib/gitlab/qa/version.rb is updated, according to SemVer.
  • Release notes are accurate.

• Checklist after merging:

  • Update the release notes for the newly created tag.