Upgrade to React 17 (#9863)

Author: iansu

packages/react-error-overlay/package.json

@@ -60,7 +60,7 @@
     "object-assign": "4.1.1",
     "promise": "8.1.0",
     "raw-loader": "^4.0.2",
-    "react": "^16.14.0",
+    "react": "^17.0.1",
     "react-app-polyfill": "^1.0.6",
     "react-dom": "^16.14.0",
     "rimraf": "^3.0.2",

packages/react-scripts/package.json

@@ -87,8 +87,8 @@
     "workbox-webpack-plugin": "5.1.4"
   },
   "devDependencies": {
-    "react": "^16.14.0",
-    "react-dom": "^16.14.0"
+    "react": "^17.0.1",
+    "react-dom": "^17.0.1"
   },
   "optionalDependencies": {
     "fsevents": "^2.1.3"