build(deps): 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] <[email protected]>

package.json

@@ -42,7 +42,7 @@
     "date-fns": "^3.6.0",
     "date-fns-tz": "^3.1.3",
     "dotenv": "^16.4.5",
-    "express": "^4.19.2",
+    "express": "^4.21.0",
     "express-handlebars": "^7.1.2",
     "http-proxy-middleware": "^2.0.6",
     "kth-node-access-log": "^0.2.9",