Use react-router-6 versions separately in tests.

Author: onurtemizkan

packages/react/package.json

@@ -46,7 +46,8 @@
     "react-router-3": "npm:[email protected]",
     "react-router-4": "npm:[email protected]",
     "react-router-5": "npm:[email protected]",
-    "react-router-6": "npm:[email protected]",
+    "react-router-6": "npm:[email protected]",
+    "react-router-6.4": "npm:[email protected]",
     "redux": "^4.0.5"
   },
   "scripts": {