build(deps-dev): bump eslint from 2.13.1 to 7.4.0

Bumps [eslint](https://github.com/eslint/eslint) from 2.13.1 to 7.4.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v2.13.1...v7.4.0)

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

package.json

@@ -36,7 +36,7 @@
     "bench": "^0.3.6",
     "chai": "^4.1.2",
     "coveralls": "^3.0.0",
-    "eslint": "^2.13.1",
+    "eslint": "^7.4.0",
     "eslint-config-brightspace": "^0.4.0",
     "istanbul": "^0.4.3",
     "jwk-to-pem": "^2.0.0",