build(deps): bump github.com/palantir/go-githubapp from 0.15.0 to 0.18.0

[dependabot[bot]]

Bumps github.com/palantir/go-githubapp from 0.15.0 to 0.18.0.

Release notes

Sourced from github.com/palantir/go-githubapp's releases.

v0.18.0

• Add a cached InstallationService implementation (#268)
• Minor dependancy bumps

v0.17.0

• Upgrade google/go-github to v53 (palantir/go-githubapp#263)
• Other minor dependency upgrades

v0.16.0

• Upgrade google/go-github to v52 (#253)

Commits

• 3be3441 add a caching implementation for InstallationsService (#268)
• 12ef4a2 Bump github.com/google/go-github/v53 from 53.1.0 to 53.2.0 (#267)
• 6935a4c Excavator: Manage go version (#266)
• da3cafe Bump github.com/google/go-github/v53 from 53.0.0 to 53.1.0 (#265)
• c3739c9 Excavator: Manage go module dependencies (#264)
• 4bd855c Update go-github to v53 (#263)
• afc69e5 Excavator: Updates godel plugins to latest versions (#262)
• 1f8276d Excavator: Update godel to latest version (#261)
• 6c26ee4 Excavator: Manage go version (#260)
• f437ed9 Excavator: Update godel to latest version (#259)
• Additional commits viewable in compare view

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[aanm]

@dependabot rebase

[dependabot[bot]]

Dependabot tried to update this pull request, but something went wrong. We're looking into it, but in the meantime you can retry the update by commenting @dependabot rebase.

[dependabot[bot]]

Superseded by #65.