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

@@ -3,7 +3,7 @@
   "license": "MIT",
   "homepage": "https://github.com/veertech/localstack-aws-ses-email-viewer",
   "dependencies": {
-    "express": "^4.21.1",
+    "express": "^4.21.2",
     "mailparser": "^3.7.2",
     "node-fetch": "^3.3.2",
     "pug": "^3.0.3"