Bump path-to-regexp and serve-handler in /test

Bumps [path-to-regexp](https://github.com/pillarjs/path-to-regexp) to 3.3.0 and updates ancestor dependency [serve-handler](https://github.com/vercel/serve-handler). These dependencies need to be updated together.


Updates `path-to-regexp` from 2.2.1 to 3.3.0
- [Release notes](https://github.com/pillarjs/path-to-regexp/releases)
- [Changelog](https://github.com/pillarjs/path-to-regexp/blob/master/History.md)
- [Commits](pillarjs/path-to-regexp@v2.2.1...v3.3.0)

Updates `serve-handler` from 6.1.5 to 6.1.6
- [Release notes](https://github.com/vercel/serve-handler/releases)
- [Commits](vercel/serve-handler@6.1.5...6.1.6)

---
updated-dependencies:
- dependency-name: path-to-regexp
  dependency-type: indirect
- dependency-name: serve-handler
  dependency-type: direct:production
...

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

test/package.json

@@ -2,6 +2,6 @@
   "private": true,
   "dependencies": {
     "playwright": "^1.38.1",
-    "serve-handler": "^6.1.5"
+    "serve-handler": "^6.1.6"
   }
 }