chore: bump eslint-plugin-react from 7.20.6 to 7.21.2

Bumps [eslint-plugin-react](https://github.com/yannickcr/eslint-plugin-react) from 7.20.6 to 7.21.2.
- [Release notes](https://github.com/yannickcr/eslint-plugin-react/releases)
- [Changelog](https://github.com/yannickcr/eslint-plugin-react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yannickcr/eslint-plugin-react/commits)

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

package.json

@@ -55,7 +55,7 @@
     "eslint-config-xo": "0.32.1",
     "eslint-config-xo-react": "0.23.0",
     "eslint-config-xo-space": "0.25.0",
-    "eslint-plugin-react": "7.20.6",
+    "eslint-plugin-react": "7.21.2",
     "eslint-plugin-react-hooks": "4.1.2",
     "express": "4.17.1",
     "jest": "26.4.2",