Bump eslint from 6.8.0 to 7.3.1

Bumps [eslint](https://github.com/eslint/eslint) from 6.8.0 to 7.3.1.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v6.8.0...v7.3.1)

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

Author: dependabot-preview[bot]

package.json

@@ -76,7 +76,7 @@
     "coveralls": "^3.0.1",
     "del-cli": "^3.0.0",
     "dot": "^1.0.3",
-    "eslint": "^6.0.0",
+    "eslint": "^7.3.1",
     "gh-pages-generator": "^0.2.3",
     "glob": "^7.0.0",
     "if-node-version": "^1.0.0",