Summary

hlint was initially introduced back in 2020 by #3816, and its version (2.2.11) has remained largely the same for the past 2 years. Over time, more hints were added to hlint and it was not immediately apparent at the developer side as CI was running on an older version. I don't really think there's any harm in keeping it pinned for extended periods of time, but it'd be nice to catch up every couple of years or so.

Motivation

Updating to a more recent version would catch hints that have never been hit before, which would also elide the extraneous hints given by haskell-language-server once the codebase is updated.