Log Message:
devel/difftastic: update to 0.54.0

0.54 (released 7th January 2024)
Parsing
 - Added support for Salesforce Apex.
 - Improved parsing of regex literals in Clojure and strictness annotations
   in Haskell.

Diffing
 - Difftastic will now also report file permission changes.
 - Fixed an issue where directory diffing would show a file more than once.

Display
 - Fixed a rare crash when the last non-blank line had changes for certain
   parsers, particularly YAML.

Command Line Interface
 - Difftastic now errors if given a single path, unless that file contains
   conflict markers. Previously this was a warning.

Build
 - Difftastic now requires Rust 1.63 to build.