chore(deps-dev): bump @cloudflare/vitest-pool-workers

Bumps the cloudflare group with 1 update in the / directory: [@cloudflare/vitest-pool-workers](https://github.com/cloudflare/workers-sdk/tree/HEAD/packages/vitest-pool-workers).


Updates `@cloudflare/vitest-pool-workers` from 0.18.8 to 0.20.1
- [Release notes](https://github.com/cloudflare/workers-sdk/releases)
- [Changelog](https://github.com/cloudflare/workers-sdk/blob/main/packages/vitest-pool-workers/CHANGELOG.md)
- [Commits](https://github.com/cloudflare/workers-sdk/commits/@cloudflare/vitest-pool-workers@0.20.1/packages/vitest-pool-workers)

---
updated-dependencies:
- dependency-name: "@cloudflare/vitest-pool-workers"
  dependency-version: 0.19.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: cloudflare
...

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

Author: dependabot[bot]

apps/desk/package.json

@@ -87,7 +87,7 @@
     "zod": "^4.4.3"
   },
   "devDependencies": {
-    "@cloudflare/vitest-pool-workers": "^0.18.8",
+    "@cloudflare/vitest-pool-workers": "^0.20.1",
     "@cloudflare/workers-types": "^5.20260719.1",
     "@playwright/test": "^1.62.0",
     "@types/node": "^24.0.0",