Update version to 7.29.1

Diff

• https://gitlab.com/gitlab-org/gitlab-qa/compare/v7.29.0...3f97590b51d14a8ad74458eaeb0665b0a9e5463c

Release notes:

Fixes

• Fix FileUtils reference (!963 - merged)

Doc changes

• Add specific examples for running smoke tests (!953 - merged)

Other changes (CI, backstage)

• Do not use logger to capture test run output (!964 - merged)

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.