Add recommendation that developers using macOS CLI should install gpatch.

[trackleft]

It was discovered that some patches do not apply via composer when running composer install or composer update -W.
After some searching, an article was found cweagans/composer-patches#423
The recommendation was to install gpatch.

The error we saw when attempting to run composer update locally on a mac.

  - Applying patches for drupal/role_delegation
    https://www.drupal.org/files/issues/2022-07-25/3299201-4.patch (Restrict access to cancel/remove accounts with non-assignable roles (3299201))
   Could not apply patch! Skipping. The error was: The process "patch '-p0' --no-backup-if-mismatch -d 'pantheon-sites/xxxxx/web/modules/contrib/role_delegation' < '/var/folders/jg/j1yj5mjn31552zvkxwhk8x000000gr/T/67116f0d4ae03.patch'" exceeded the timeout of 300 seconds.

In Patches.php line 331:
                                                                               
  Cannot apply patch Restrict access to cancel/remove accounts with non-assig  
  nable roles (3299201) (https://www.drupal.org/files/issues/2022-07-25/32992  
  01-4.patch)!                                                                 

How to install using homebrew.

brew install gpatch