Upgrade to latest Yarn stable

Author: colinrotherham

package.json

@@ -134,5 +134,5 @@
     "react-dom": ">=16.8.0",
     "tslib": ">=2.8.0"
   },
-  "packageManager": "yarn@4.1.1"
+  "packageManager": "yarn@4.10.3"
 }