Bump eslint-plugin-github from 5.0.1 to 5.1.8

Bumps [eslint-plugin-github](https://github.com/github/eslint-plugin-github) from 5.0.1 to 5.1.8.
- [Release notes](https://github.com/github/eslint-plugin-github/releases)
- [Commits](github/eslint-plugin-github@v5.0.1...v5.1.8)

---
updated-dependencies:
- dependency-name: eslint-plugin-github
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]