Bump eslint from 5.16.0 to 7.7.0 (#139)

Bumps [eslint](https://github.com/eslint/eslint) from 5.16.0 to 7.7.0.
- [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/v5.16.0...v7.7.0)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -36,7 +36,7 @@
     "@types/node": "^14.6.0",
     "@typescript-eslint/parser": "^3.7.0",
     "@vercel/ncc": "^0.23.0",
-    "eslint": "^5.16.0",
+    "eslint": "^7.7.0",
     "eslint-plugin-github": "^4.0.1",
     "eslint-plugin-jest": "^23.18.0",
     "jest": "^24.9.0",