Bump eslint-plugin-github from 5.1.7 to 5.1.8 (#144)

Bumps [eslint-plugin-github](https://github.com/github/eslint-plugin-github) from 5.1.7 to 5.1.8.
- [Release notes](https://github.com/github/eslint-plugin-github/releases)
- [Commits](github/eslint-plugin-github@v5.1.7...v5.1.8)

---
updated-dependencies:
- dependency-name: eslint-plugin-github
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]