Today I found a way to translate the - Any - entry used in the views' exposed filters. In my specific case, the filter retrieves the values ​​from a taxonomy that groups the site's news in categories; I also used the Better Exposed Filter module to view the filter entries as links.

Contributing to Drupal isn't easy, especially when you have busy weeks and finding time seems impossible. Then let's face it, sometimes it takes a lot more to "spin up" the local development environment to work on an issue than to solve the issue itself.