Bump octokit from 2.0.14 to 2.0.16 (#121)

Bumps [octokit](https://github.com/octokit/octokit.js) from 2.0.14 to 2.0.16.
- [Release notes](https://github.com/octokit/octokit.js/releases)
- [Commits](octokit/octokit.js@v2.0.14...v2.0.16)

---
updated-dependencies:
- dependency-name: octokit
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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