Update peer dependency for mqtt to 5.0.2

[mze9412]

📝 Description

Migrate mqtt package to version 5.0.2 to keep up with upstream releases.

🎯 Relevant issues

None

💎 Type of change

• New feature (non-breaking change which adds functionality)
  migrate to current version of mqtt package (5.0.2)

📜 Example code

🚦 How Has This Been Tested?

Running two microservice applications with active mqtt usage for multiple days.

🏁 Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes - discussed in Discord
• I have commented my code, particularly in hard-to-understand areas