Update pl_PL app translation for 3.10.0

[pljones]

Hi @SeeLook,
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 pl_PL 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 pl_PL app translation for 3.10.0

Fixes #3126

Further documentation can be found in TRANSLATING.md.

Thanks for contributing to Jamulus!

[ann0see]

@gnu-ewm thanks for the translation! @pljones I believe this PR can be closed.

[pljones]

Do weblate translators get mentioned somewhere, by the way? If they're on weblate only, should the script have some way to know who they are? Contact them on weblate / notify the script runner to do so?

[ann0see]

I think they show up in the commit history. Also there's a page on Weblate about the contributors which can be filtered by time.

[pljones]

I've not really got a clue about using Weblate...

[pljones]

Closing with my concerns raised in #3137.