Bump eslint from 7.27.0 to 7.28.0

Bumps [eslint](https://github.com/eslint/eslint) from 7.27.0 to 7.28.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/eslint/eslint/compare/v7.27.0...v7.28.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -31,7 +31,7 @@
         "@types/node": "^15.12.0",
         "@typescript-eslint/parser": "^4.26.0",
         "@vercel/ncc": "^0.28.6",
-        "eslint": "^7.27.0",
+        "eslint": "^7.28.0",
         "eslint-plugin-github": "^4.1.3",
         "eslint-plugin-jest": "^24.3.6",
         "https": "^1.0.0",