Update dependency eslint-plugin-react to v7.20.3

Author: renovate-bot

package.json

@@ -18,7 +18,7 @@
     "eslint-plugin-import": "2.17.3",
     "eslint-plugin-node": "8.0.1",
     "eslint-plugin-promise": "4.1.1",
-    "eslint-plugin-react": "7.12.4",
+    "eslint-plugin-react": "7.20.3",
     "eslint-plugin-react-hooks": "2.5.1",
     "eslint-plugin-standard": "4.0.1",
     "html-webpack-plugin": "3.2.0",