Bump eslint from 7.3.1 to 7.4.0

Bumps [eslint](https://github.com/eslint/eslint) from 7.3.1 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@v7.3.1...v7.4.0)

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

package.json

@@ -36,7 +36,7 @@
     "babel-loader": "^8.1.0",
     "babel-preset-stage-2": "^6.24.1",
     "css-loader": "^3.6.0",
-    "eslint": "^7.3.1",
+    "eslint": "^7.4.0",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
     "style-loader": "^1.2.1",