chore(deps): update package.json

Co-authored-by: Guy Mac <guy.mcclenahan@aexp.com>

Author: dominic-farquharson

package.json

@@ -32,7 +32,7 @@
     "Andrew Sutedja <Andrew.Sutedja@aexp.com>"
   ],
   "peerDependencies": {
-    "react": ">=16.3.0"
+    "react": ">=16.3.0 <20"
   },
   "devDependencies": {
     "@babel/cli": "^7.8.4",