Bump typescript from 4.2.4 to 4.8.4 in /ui

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.2.4 to 4.8.4.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v4.2.4...v4.8.4)

---
updated-dependencies:
- dependency-name: typescript
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

ui/package.json

@@ -32,7 +32,7 @@
     "react-syntax-highlighter": "15.4.3",
     "react-window": "1.8.6",
     "recharts": "2.1.4",
-    "typescript": "~4.2.4"
+    "typescript": "~4.8.4"
   },
   "scripts": {
     "start": "export PUBLIC_URL=http://localhost:3000/ && react-scripts start",