chore: bump express in /packages/fetch-error-handler

Bumps [express](https://github.com/expressjs/express) from 4.21.2 to 5.1.0.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@4.21.2...v5.1.0)

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

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

Author: dependabot[bot]

packages/fetch-error-handler/package.json

@@ -20,7 +20,7 @@
   },
   "devDependencies": {
     "@types/express": "^5.0.1",
-    "express": "^4.21.2",
+    "express": "^5.1.0",
     "node-fetch-1": "npm:node-fetch@^1.7.3",
     "node-fetch-2": "npm:node-fetch@^2.7.0",
     "undici": "^7.7.0"