Bump eslint-plugin-react from 7.21.3 to 7.21.4

Bumps [eslint-plugin-react](https://github.com/yannickcr/eslint-plugin-react) from 7.21.3 to 7.21.4.
- [Release notes](https://github.com/yannickcr/eslint-plugin-react/releases)
- [Changelog](https://github.com/yannickcr/eslint-plugin-react/blob/master/CHANGELOG.md)
- [Commits](jsx-eslint/eslint-plugin-react@v7.21.3...v7.21.4)

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

package.json

@@ -50,7 +50,7 @@
     "eslint-plugin-flowtype": "4.7.0",
     "eslint-plugin-import": "2.22.1",
     "eslint-plugin-jsx-a11y": "6.3.1",
-    "eslint-plugin-react": "7.21.3",
+    "eslint-plugin-react": "7.21.4",
     "eslint-plugin-react-hooks": "^4.1.2",
     "file-loader": "6.1.0",
     "fs-extra": "^9.0.1",