devel/git-modes: update to 1.2.4

[ultima]

Summary

• Updated to 1.2.4
• Added NO_ARCH
  • gitconfig: Avoid highlighting long flags
  • Update copyright years

PR\: 219974
Sumitted by\: Yasuhiro KIMURA <[e-mail]> (maintainer)
Reviewed by\: lifanov (mentor), matthew (mentor)
Approved by\: lifanov (mentor), matthew (mentor)
Differential Revision\: https://reviews.freebsd.org/DXXXXX

Test Plan

portlint:
WARN: Makefile: for new port, make $FreeBSD$ tag in comment section empty, to make SVN happy.
WARN: Makefile: new ports should not set PORTEPOCH.
0 fatal errors and 2 warnings found.

poudriere:
103i386
103amd64
110i386
110amd64
12i386
12amd64

[ultima]

• Added NO-ARCH

[lifanov]

Looks good!