build(deps): bump express from 4.21.1 to 4.21.2

Bumps [express](https://github.com/expressjs/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: express
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -16,7 +16,7 @@
     "cors": "2.8.5",
     "debug": "4.3.7",
     "dotenv": "16.4.7",
-    "express": "4.21.1",
+    "express": "4.21.2",
     "hbs": "4.2.0",
     "highlight.js": "11.10.0",
     "marked": "15.0.3",