Bump typescript from 4.6.2 to 4.9.5

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.6.2 to 4.9.5.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/commits)

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

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

package.json

@@ -12,7 +12,7 @@
   "devDependencies": {
     "eslint": "^8.11.0",
     "eslint-config-etherpad": "^3.0.12",
-    "typescript": "^4.6.2"
+    "typescript": "^4.9.5"
   },
   "scripts": {
     "lint": "eslint .",