Bump express from 5.1.0 to 5.2.1

Bumps [express](https://github.com/expressjs/express) from 5.1.0 to 5.2.1.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](https://github.com/expressjs/express/compare/v5.1.0...v5.2.1)

---
updated-dependencies:
- dependency-name: express
  dependency-version: 5.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -23,7 +23,7 @@
     "cookie-parser": "^1.4.7",
     "cors": "^2.8.5",
     "dotenv": "^17.2.3",
-    "express": "^5.1.0",
+    "express": "^5.2.1",
     "jsonwebtoken": "^9.0.2",
     "mariadb": "^3.4.5",
     "node-cron": "^4.2.1",