Bump github.com/xanzy/go-gitlab from 0.60.0 to 0.86.0

[dependabot[bot]]

Bumps github.com/xanzy/go-gitlab from 0.60.0 to 0.86.0.

Commits

• 0886867 Update CI and CONTRIBUTION.md
• 57a8f8f Fix two linter warnings
• d4057c7 Merge pull request #1646 from theoriginalstove/1643-contributing-guide
• c1a78fc Merge pull request #1740 from PatrickRice-KSC/add-admin-permission-const
• 9f3d9fa Add admin permission const
• 85fa21c Merge pull request #1732 from Mareo/add-support-for-discord-service
• 2e614fe Merge pull request #1734 from jasonwliu/master
• e7ee489 fix type for SystemOutput
• 1a7fd5c Update README.md
• 39ca669 Update CONTRIBUTING.md
• Additional commits viewable in compare view

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