build(deps): update express requirement from ^4.19.2 to ^4.21.0

Updates the requirements on [express](https://github.com/expressjs/express) to permit the latest version.
- [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] <[email protected]>

package.json

@@ -28,7 +28,7 @@
     "axios": "^1.7.7",
     "body-parser": "^1.20.2",
     "cors": "^2.8.5",
-    "express": "^4.19.2",
+    "express": "^4.21.0",
     "multer": "^1.4.5-lts.1",
     "swagger-node-runner-fork": "^0.8.0",
     "swagger-ui-express": "^5.0.1",