fix: ui/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-REACTROUTER-14908286

Author: snyk-bot

ui/package.json

@@ -58,8 +58,8 @@
     "react-hot-loader": "^3.1.3",
     "react-moment": "^0.9.2",
     "react-paginate": "^6.2.1",
-    "react-router": "^4.3.1",
-    "react-router-dom": "^4.2.2",
+    "react-router": "^6.30.2",
+    "react-router-dom": "^6.30.2",
     "react-svg-piechart": "^2.1.1",
     "redoc": "^2.0.0-rc.40",
     "sass-loader": "^6.0.6",