chore(deps-dev): bump @typescript-eslint/eslint-plugin (#267)

Bumps [@typescript-eslint/eslint-plugin](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin) from 3.0.2 to 3.1.0.
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v3.1.0/packages/eslint-plugin)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -22,7 +22,7 @@
     "@types/node": "~14.0.1",
     "@types/range-parser": "~1.2.3",
     "@types/supertest": "~2.0.9",
-    "@typescript-eslint/eslint-plugin": "~3.0.1",
+    "@typescript-eslint/eslint-plugin": "~3.1.0",
     "@typescript-eslint/parser": "~3.1.0",
     "coveralls": "~3.1.0",
     "cross-env": "~7.0.2",