Update it_IT app translation for 3.10.0

[pljones]

Hi @dzpex,
We are getting ready for the 3.10.0 release. No further changes to translatable strings are currently planned for this release.

We would be happy if you updated the Jamulus software translations for it_IT by 2023-08-20.

Please either update the translations on Hosted Weblate or use Git:

• Update your fork from jamulussoftware/jamulus main and create a working branch
• Update translations using Qt Linguist in your fork,
• Commit and push your changes and reference this Issue,
• Open a Pull Request before 2023-08-20

Suggested commit and PR message:

Update it_IT app translation for 3.10.0

Fixes #3124

Further documentation can be found in TRANSLATING.md.

Thanks for contributing to Jamulus!

[ann0see]

Closing as #3119 includes translation by @dzpex and it_IT is finished.

[ann0see]

@dzpex I messed up but I think the translation should be ok. Please check if #3119 is ok.