build(deps): bump mqtt from 5.1.4 to 5.2.1 (#1167)

Bumps [mqtt](https://github.com/mqttjs/MQTT.js) from 5.1.4 to 5.2.1.
- [Release notes](https://github.com/mqttjs/MQTT.js/releases)
- [Changelog](https://github.com/mqttjs/MQTT.js/blob/main/CHANGELOG.md)
- [Commits](mqttjs/MQTT.js@v5.1.4...v5.2.1)

---
updated-dependencies:
- dependency-name: mqtt
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -45,7 +45,7 @@
     "http-z": "^7.0.0",
     "jws": "^4.0.0",
     "mongodb": "^6.2.0",
-    "mqtt": "^5.1.4",
+    "mqtt": "^5.2.1",
     "node-forge": "^1.3.1",
     "pg": "^8.11.3",
     "rc": "^1.2.8",