Bump react-router-dom from 5.3.0 to 5.3.4 in /ui

Bumps [react-router-dom](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router-dom) from 5.3.0 to 5.3.4.
- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/main/packages/react-router-dom/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/v5.3.4/packages/react-router-dom)

---
updated-dependencies:
- dependency-name: react-router-dom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

ui/package.json

@@ -32,7 +32,7 @@
     "react-image-lightbox": "^5.1.4",
     "react-measure": "^2.5.2",
     "react-redux": "^7.2.9",
-    "react-router-dom": "^5.3.0",
+    "react-router-dom": "^5.3.4",
     "redux": "^4.2.0",
     "redux-saga": "^1.1.3",
     "uuid": "^8.3.2"