Bump express from 4.18.2 to 4.19.2 in /nextcloud_backup/backend

Bumps [express](https://github.com/expressjs/express) from 4.18.2 to 4.19.2.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@4.18.2...4.19.2)

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

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

nextcloud_backup/backend/package.json

@@ -18,7 +18,7 @@
     "cron": "3.1.7",
     "debug": "4.3.4",
     "errorhandler": "^1.5.1",
-    "express": "4.18.2",
+    "express": "4.19.2",
     "fast-xml-parser": "^4.3.4",
     "figlet": "^1.7.0",
     "form-data": "4.0.0",