Bump React Hooks ESLint plugin to 4.0.0 (facebook#8939)

Author: gaearon

packages/eslint-config-react-app/package.json

@@ -23,7 +23,7 @@
     "eslint-plugin-import": "2.x",
     "eslint-plugin-jsx-a11y": "6.x",
     "eslint-plugin-react": "7.x",
-    "eslint-plugin-react-hooks": "1.x || 2.x || 3.x"
+    "eslint-plugin-react-hooks": "1.x || 2.x || 3.x || 4.x"
   },
   "dependencies": {
     "confusing-browser-globals": "^1.0.9"

packages/react-scripts/package.json

@@ -50,7 +50,7 @@
     "eslint-plugin-import": "2.20.2",
     "eslint-plugin-jsx-a11y": "6.2.3",
     "eslint-plugin-react": "7.19.0",
-    "eslint-plugin-react-hooks": "^1.6.1",
+    "eslint-plugin-react-hooks": "^4.0.0",
     "file-loader": "4.3.0",
     "fs-extra": "^8.1.0",
     "html-webpack-plugin": "4.3.0",