Bump path-to-regexp and express in /samples/todo-app/stats-api (#115)

Bumps [path-to-regexp](https://github.com/pillarjs/path-to-regexp) to 0.1.12 and updates ancestor dependency [express](https://github.com/expressjs/express). These dependencies need to be updated together.


Updates `path-to-regexp` from 0.1.10 to 0.1.12
- [Release notes](https://github.com/pillarjs/path-to-regexp/releases)
- [Changelog](https://github.com/pillarjs/path-to-regexp/blob/master/History.md)
- [Commits](pillarjs/path-to-regexp@v0.1.10...v0.1.12)

Updates `express` from 4.21.1 to 4.21.2
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/4.21.2/History.md)
- [Commits](expressjs/express@4.21.1...4.21.2)

---
updated-dependencies:
- dependency-name: path-to-regexp
  dependency-type: indirect
- dependency-name: express
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

samples/todo-app/stats-api/package.json

@@ -5,7 +5,7 @@
         "nodemon": "^2.0.20"
     },
     "dependencies": {
-        "express": "^4.21.1",
+        "express": "^4.21.2",
         "redis": "^3.1.1"
     },
     "main": "server.js",