Bump express from 4.16.0 to 4.19.2 in /part2/VulnerableAppTwo

Bumps [express](https://github.com/expressjs/express) from 4.16.0 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@4.16.0...4.19.2)

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

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

part2/VulnerableAppTwo/package.json

@@ -7,7 +7,7 @@
     "start": "node index.js"
   },
   "dependencies": {
-    "express": "4.16.0", 
+    "express": "4.19.2", 
     "lodash": "4.17.10", 
     "marked": "0.3.6",
     "mongoose": "5.0.16",