Move translation checker (and potentially other runners) to ARM runner

[ann0see]

Currently, the translation check runs on ubuntu-latest:

jamulus/.github/workflows/translation-check.yml

Line 25 in cc40a8a

runs-on: ubuntu-latest

To save resources, I assume that ARM is more efficient. As we use ARM on other similar runners too, I believe we should switch to arm here too.

[ann0see]

It's likely that we can also just change some of the other workflows to ARM.

[ann0see]

GitHub seems to be unreliable again... Will look at testing in the following days.