npm: bump typescript from 3.9.7 to 4.5.4 in /dashboard (#982)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.7 to 4.5.4.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.9.7...v4.5.4)

---
updated-dependencies:
- dependency-name: typescript
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

dashboard/package-lock.json

@@ -49,7 +49,7 @@
     "rollup-plugin-javascript-obfuscator": "^1.0.4",
     "rollup-plugin-typescript": "^1.0.1",
     "ts-node": "^7.0.1",
-    "typescript": "^3.9.7",
+    "typescript": "^4.5.4",
     "ws": "^8.4.0"
   }
 }