Bump eslint from 6.5.0 to 6.6.0

Bumps [eslint](https://github.com/eslint/eslint) from 6.5.0 to 6.6.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v6.5.0...v6.6.0)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -22,7 +22,7 @@
     "css-loader": "2.1.1",
     "dotenv": "6.2.0",
     "dotenv-expand": "5.1.0",
-    "eslint": "^6.5.0",
+    "eslint": "^6.6.0",
     "eslint-config-react-app": "^5.0.2",
     "eslint-loader": "3.0.2",
     "eslint-plugin-flowtype": "3.13.0",