chore: bump paho-mqtt in the python-dependencies group

Bumps the python-dependencies group with 1 update: [paho-mqtt](https://github.com/eclipse/paho.mqtt.python).


Updates `paho-mqtt` from 2.0.0 to 2.1.0
- [Release notes](https://github.com/eclipse/paho.mqtt.python/releases)
- [Changelog](https://github.com/eclipse/paho.mqtt.python/blob/master/ChangeLog.txt)
- [Commits](eclipse/paho.mqtt.python@v2.0.0...v2.1.0)

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

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

requirements.txt

@@ -1,3 +1,3 @@
 docopt==0.6.2
 requests==2.31.0
-paho-mqtt==2.0.0
+paho-mqtt==2.1.0