fix: ui/package.json & ui/package-lock.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-lock.json

@@ -42,8 +42,8 @@
     "react-dom": "^16.14.0",
     "react-github-btn": "^1.4.0",
     "react-responsive-select": "^4.6.3",
-    "react-router": "^4.3.1",
-    "react-router-dom": "^4.3.1",
+    "react-router": "^6.30.2",
+    "react-router-dom": "^6.30.2",
     "react-test-renderer": "^16.14.0",
     "react-timeago": "^4.4.0",
     "resolve": "1.12.0",