updated deprecated rules (facebook#11622)

Author: wisammechano

packages/eslint-config-react-app/index.js

@@ -140,8 +140,8 @@ module.exports = {
       },
     ],
     'no-multi-str': 'warn',
-    'no-native-reassign': 'warn',
-    'no-negated-in-lhs': 'warn',
+    'no-global-assign': 'warn',
+    'no-unsafe-negation': 'warn',
     'no-new-func': 'warn',
     'no-new-object': 'warn',
     'no-new-symbol': 'warn',