Bump express from 4.18.2 to 4.19.2 in /examples

Bumps [express](https://github.com/expressjs/express) from 4.18.2 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@4.18.2...4.19.2)

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

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

examples/package.json

@@ -32,7 +32,7 @@
     "@rster/types": "^0.1.4",
     "@rster/util": "^0.1.0",
     "@rster/worker-express": "^0.1.2",
-    "express": "^4.18.2",
+    "express": "^4.19.2",
     "rster": "^0.1.2"
   },
   "devDependencies": {