makepkg-git: accommodate for Ruby v3.4.0

In that version, `strscan` not only has a native library but also Ruby
code that we need to provide to be able to run `asciidoctor` (which is
used to render Git's documentation).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

.sparse/makepkg-git

@@ -81,6 +81,7 @@
 /mingw32/lib/ruby/*/i386-mingw32/enc/windows_1252.so
 /mingw32/lib/ruby/*/optparse.rb
 /mingw32/lib/ruby/*/i386-mingw32/strscan.so
+/mingw32/lib/ruby/*/strscan/strscan.rb
 /mingw32/lib/ruby/*/pathname.rb
 /mingw32/lib/ruby/*/i386-mingw32/pathname.so
 /mingw32/lib/ruby/*/did_you_mean*