Bump @octokit/app from 14.0.1 to 14.0.2 in /.evergreen/github_app (#380)

Bumps [@octokit/app](https://github.com/octokit/app.js) from 14.0.1 to 14.0.2.
- [Release notes](https://github.com/octokit/app.js/releases)
- [Commits](octokit/app.js@v14.0.1...v14.0.2)

---
updated-dependencies:
- dependency-name: "@octokit/app"
  dependency-type: indirect
...

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