chore(deps): bump express from 5.1.0 to 5.2.1 in /tests/apps/checks-root

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>

tests/apps/checks-root/package-lock.json

@@ -228,18 +228,19 @@
       }
     },
     "node_modules/express": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/express/-/express-5.1.0.tgz",
-      "integrity": "sha512-DT9ck5YIRU+8GYzzU5kT3eHGA5iL+1Zd0EutOmTE9Dtk+Tvuzd23VBU+ec7HPNSTxXYO55gPV/hq4pSBJDjFpA==",
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/express/-/express-5.2.1.tgz",
+      "integrity": "sha512-hIS4idWWai69NezIdRt2xFVofaF4j+6INOpJlVOLDO8zXGpUVEVzIYk12UUi2JzjEzWL3IOAxcTubgz9Po0yXw==",
       "license": "MIT",
       "dependencies": {
         "accepts": "^2.0.0",
-        "body-parser": "^2.2.0",
+        "body-parser": "^2.2.1",
         "content-disposition": "^1.0.0",
         "content-type": "^1.0.5",
         "cookie": "^0.7.1",
         "cookie-signature": "^1.2.1",
         "debug": "^4.4.0",
+        "depd": "^2.0.0",
         "encodeurl": "^2.0.0",
         "escape-html": "^1.0.3",
         "etag": "^1.8.1",