[gtk/macos-ci: 6/7] Fix the cairo build on OS X

[Matthias Clasen <matthiasc src gnome org>]

commit 78563b7dd7a9d75a5e4bb30fe22e8d98c53557bd
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 3 13:46:34 2021 -0500

    Fix the cairo build on OS X
    
    Change the subproject to point to a branch that includes
    an OS X build fix. Once
    https://gitlab.freedesktop.org/cairo/cairo/-/issues/441
    is fixed, we should switch back to master.

 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