Bump express from 4.22.1 to 5.2.1 in /js/spa

Bumps [express](https://github.com/expressjs/express) from 4.22.1 to 5.2.1.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@v4.22.1...v5.2.1)

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

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

Author: dependabot[bot]

js/spa/package.json

@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "@keycloak/keycloak-admin-client": "^26.0.5",
-    "express": "^4.18.2",
+    "express": "^5.2.1",
     "keycloak-js": "^26.0.5"
   },
   "devDependencies": {