Bump express from 5.1.0 to 5.2.0 in /backup

Bumps [express](https://github.com/expressjs/express) from 5.1.0 to 5.2.0.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@v5.1.0...v5.2.0)

---
updated-dependencies:
- dependency-name: express
  dependency-version: 5.2.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

backup/package.json

@@ -6,7 +6,7 @@
   "dependencies": {
     "@google-cloud/storage": "^7.16.0",
     "age-encryption": "^0.2.3",
-    "express": "^5.1.0",
+    "express": "^5.2.0",
     "morgan": "^1.10.0"
   },
   "devDependencies": {