Bump version to 7.27.2

• Diff: https://gitlab.com/gitlab-org/gitlab-qa/compare/v7.27.1...4e7d66575d59b471c643c967e9c499c59aa628af

• Release notes:

### New scenarios and scenario updates

- !948 Remove obsolete GitLab configs.
- !950 Remove actioncable scenario code.
- !939 Fix container registry with cdn scenario.

### Fixes

- !954 Mask private tokens in failures.

### Other changes (CI, backstage)

- !949 Temporarily allow failure.
- !952 Fix allure report generation name.

• 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.