Bump eslint from 6.8.0 to 7.3.0

Bumps [eslint](https://github.com/eslint/eslint) from 6.8.0 to 7.3.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v6.8.0...v7.3.0)

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

package.json

@@ -58,7 +58,7 @@
         "babel-loader": "^8.0.6",
         "coveralls": "^3.0.11",
         "cross-env": "^7.0.2",
-        "eslint": "^6.8.0",
+        "eslint": "^7.3.0",
         "eslint-plugin-import": "^2.20.1",
         "eslint-plugin-jest": "^23.8.2",
         "eslint-plugin-jsx-a11y": "^6.2.3",