chore(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-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Diff for: package.json

@@ -47,7 +47,7 @@
     "eslint": "8.57.1",
     "eslint-plugin-markdown": "^5.1.0",
     "eslint-plugin-mocha-no-only": "1.2.0",
-    "express": "^4.19.2",
+    "express": "^5.1.0",
     "fs-extra": "~11.3.0",
     "highlight.js": "11.11.1",
     "lodash.isequal": "4.5.0",