Bump express from 4.17.2 to 4.21.1 in /api-expressjs-vm

Bumps [express](https://github.com/expressjs/express) from 4.17.2 to 4.21.1.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.1/History.md)
- [Commits](expressjs/express@4.17.2...4.21.1)

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

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

Author: dependabot[bot]

api-expressjs-vm/package-lock.json

@@ -12,7 +12,7 @@
     },
     "license": "MIT",
     "dependencies": {
-        "express": "^4.21.0",
+        "express": "^4.21.1",
         "pm2": "^5.4.2"
     }
 }