build(deps-dev): bump express from 4.21.2 to 5.1.0

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-version: 5.1.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -56,7 +56,7 @@
     "@types/koa-router": "^7.4.8",
     "@types/supertest": "^2.0.16",
     "coveralls": "^3.1.1",
-    "express": "^4.18.2",
+    "express": "^5.1.0",
     "jest": "^27.5.1",
     "koa": "^3.0.0",
     "koa-bodyparser": "^4.4.1",