Bump express from 4.17.1 to 4.17.3 in /Chapter12/express-pino-app

Bumps [express](https://github.com/expressjs/express) from 4.17.1 to 4.17.3.
- [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/4.17.1...4.17.3)

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

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

Chapter12/express-pino-app/package.json

@@ -11,7 +11,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "express": "^4.17.1",
+    "express": "^4.17.3",
     "express-pino-logger": "^5.0.0",
     "pino": "^6.3.2"
   }