Bump github.com/xanzy/go-gitlab from 0.73.1 to 0.80.0

Bumps github.com/xanzy/go-gitlab from 0.73.1 to 0.80.0.

Commits

• 9e8a56f Merge pull request #1645 from blacknon/master
• c6a3d13 Merge remote-tracking branch 'refs/remotes/origin/master'
• 2544230 UpdateSnippetOptionにFilesを追加
• 9e38892 Formatted the project using gofumpt
• f46a273 Merge pull request #1597 from abdellaui/bugfix/rename_projects_NameRegexDelet...
• 79679f4 Tweak PR a little…
• 4b328c1 Merge pull request #1612 from FantasyTeddy/update-protected-branches
• 1b76c1c Few minor tweaks…
• 51f101e Merge pull request #1642 from theoriginalstove/1583-custom-headers
• ab870cf Tweak the PR a little
• Additional commits viewable in compare view