Update gruvbox to use manual accent ramps

Also updated it's neutral to contain more values sourced from the gruvbox repo

Co-Authored-By: gibusu <95764254+gibusu@users.noreply.github.com>
a86756ed20Nate Butler committed on 10/20/2022, 8:25:54 PMparente3ef6d3
1 file changedLine totals unavailable