ci: bump express from 4.21.1 to 4.21.2 in the express group

Bumps the express group with 1 update: [express](https://github.com/expressjs/express).


Updates `express` from 4.21.1 to 4.21.2
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.2/History.md)
- [Commits](expressjs/express@4.21.1...4.21.2)

---
updated-dependencies:
- dependency-name: express
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: express
...

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

package.json

@@ -23,7 +23,7 @@
     "colors": "^1.4.0",
     "cors": "^2.7.1",
     "dotenv": "^16.4.7",
-    "express": "^4.21.1",
+    "express": "^4.21.2",
     "express-async-handler": "^1.2.0",
     "express-rate-limit": "^7.4.1",
     "mongoose": "^8.8.3",