Corrected the QT version used in CI

[hr-98]

The QT version in the CI pipeline did not match what was used during porting to QT6. It should've been 6.5.

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[what-the-diff]

PR Summary

• 🌟 Updated QT_VERSION
  Good news! We have improved our system now by updating the version of our environment variable called QT_VERSION which now stands at '6.5.1', a leap from the previous '6.2.4'. This basically means that we have equipped ourselves with the latest tools and improvements available. Keep up with the trend! 🚀

• 🧰 Added libxcb-cursor0 Package
  In our journey of striving for better, we've successfully installed a new package called libxcb-cursor0 during the "install build dependencies" step. This new addition is critical for enhancing how we build our software, equipping us with more tools to create amazing things. Remember, every package is a stepping stone towards a better product. Keep building! 🛠

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[DSCaskey]

We're moving to Qt 6.5.2... Qt 6.5.1 is no longer an option in the Maintence tool.