Bump express from 4.19.2 to 4.21.0

Bumps [express](https://github.com/expressjs/express) from 4.19.2 to 4.21.0.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.0/History.md)
- [Commits](expressjs/express@4.19.2...4.21.0)

---
updated-dependencies:
- dependency-name: express
  dependency-type: direct:production
...

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

package.json

@@ -35,7 +35,7 @@
     "cookie-parser": "^1.4.3",
     "cors": "^2.8.4",
     "debug": "~2.6.9",
-    "express": "^4.19.2",
+    "express": "^4.21.0",
     "express-init": "^1.1.1",
     "express-rate-limit": "^6.0.4",
     "express-routes-versioning": "^1.0.1",