Log Message:
textproc/git-delta: update to 0.15.0

What's Changed

Thanks to all contributors for the changes in this release! One particularly
exciting contribution is the tweaks to the highlighting algorithm made by
@phillipwood in #1244. This is something that has remained more or less the
same since delta was first created, but #1244 brings several improvements in
the details of exactly which characters are highlighted.

 - Change Rust toolchain in 'Deploy Manual' CI task by @dandavison in #1183
 - Switch bat to library mode by @tranzystorek-io in #1187
 - Add sourcehut link parsing by @p00f in #1190
 - Refactoring ansi/iterator by @zhiburt in #1191
 - Add codeberg link parsing by @p00f in #1194
 - Add terminal width fallback via stty if on windows/MSYS2 by @th1000s in
   #1030
 - measure_text_width() without constructing a temporary string by @th1000s in
   #1216
 - Remove Git 2.37 workaround from install docs by @adamchainz in #1228
 - Fix clippy warnings by @clnoll in #1236
 - Remove Provides in Debian package by @baryluk in #1217
 - Handle quoted filenames in diff header by @th1000s in #1222
 - ci: improve formatting by @MarcoIeni in #1238
 - Highlighting improvements by @phillipwood in #1244
 - ci: release apple arm binary by @MarcoIeni in #1239
 - try fix bad alignment in unicode (#1144) by @SheldonNico in #1145