[gtk-osx] Remove six, add pygments, allow meson upgrade with minimum at 0.56.0.

[John Ralls <jralls src gnome org>]

commit d55a6949a9070d8b1bd2153a05f8f2450b28d47c
Author: John Ralls <jralls ceridwen us>
Date:   Thu Apr 15 17:00:31 2021 -0700

    Remove six, add pygments, allow meson upgrade with minimum at 0.56.0.
    
    gtk-doc no longer needs six, but does need pygments.
    Fonconfig requires meson >= 0.56.0

 gtk-osx-setup.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk-osx-setup.sh b/gtk-osx-setup.sh
index 0362d944..826b48e9 100755
--- a/gtk-osx-setup.sh
+++ b/gtk-osx-setup.sh
@@ -152,8 +152,8 @@ url = "https://pypi.python.org/simple";
 verify_ssl = true
 
 [packages]
-six = "*"
-meson = {version="==0.55"}
+pygments = "*"
+meson = {version=">=0.56.0"}
 
 [scripts]
 jhbuild = "$DEVPREFIX/libexec/run_jhbuild.py"