Bump typescript from 4.9.3 to 4.9.4 in /docs/visualiser

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.9.3 to 4.9.4.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v4.9.3...v4.9.4)

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

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

docs/visualiser/package.json

@@ -5,7 +5,7 @@
   },
   "devDependencies": {
     "ts-loader": "^9.4.2",
-    "typescript": "^4.9.3",
+    "typescript": "^4.9.4",
     "webpack": "^5.75.0",
     "webpack-cli": "^5.0.0"
   }