rr v6 for e2e

Author: denysoblohin-okta

test/e2e/harness/package.json

@@ -6,8 +6,9 @@
     "@okta/okta-react": "*",
     "react": "^16.8.0",
     "react-dom": "^16.8.0",
-    "react-router": "^5.1.2",
-    "react-router-dom": "^5.1.2",
+    "react-router": "^6.0.0-beta.0",
+    "react-router-dom": "^6.0.0-beta.0",
+    "history": "^5.0.0",
     "react-scripts": "3.4.0"
   },
   "devDependencies": {