Mixxx 2.5.1

This is is the 1st minor release of the Mixxx 2.5 branch.

Have a look at the CHANGELOG and the Mixxx website for more information:

• https://mixxx.org/news/2025-04-27-mixxx-2_5_1-released/
• https://github.com/mixxxdj/mixxx/blob/2.5.1/CHANGELOG.md