[gtk/macos-ci] Try to fix the cairo build on OS X

[Matthias Clasen <matthiasc src gnome org>]

commit b6214c6a0b628cff3f57e805ce6bfee4444b4336
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 3 13:46:34 2021 -0500

    Try to fix the cairo build on OS X

 subprojects/cairo.wrap | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/subprojects/cairo.wrap b/subprojects/cairo.wrap
index d09964e401..5e539239fe 100644
--- a/subprojects/cairo.wrap
+++ b/subprojects/cairo.wrap
@@ -1,6 +1,6 @@
 [wrap-git]
 directory=cairo
-url=https://gitlab.freedesktop.org/cairo/cairo.git
+url=https://github.com/matthiasclasen/cairo.git
 push-url=ssh://git gitlab freedesktop org:cairo/cairo.git
-revision=master
+revision=fix-osx-build
 depth=1