chore(deps-dev): bump typescript in /packages/install-counter-worker

Bumps [typescript](https://github.com/microsoft/TypeScript) from 5.9.3 to 6.0.3.
- [Release notes](https://github.com/microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v5.9.3...v6.0.3)

---
updated-dependencies:
- dependency-name: typescript
  dependency-version: 6.0.3
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

packages/install-counter-worker/package-lock.json

@@ -9,7 +9,7 @@
   },
   "devDependencies": {
     "@cloudflare/workers-types": "^4.20250520.0",
-    "typescript": "^5.9.3",
+    "typescript": "^6.0.3",
     "vitest": "^2.1.9",
     "wrangler": "^4.45.3"
   }