[gtk/pango-main-for-3] Use pango from the main branch

[Matthias Clasen <matthiasc src gnome org>]

commit fe14b9d311c785a091f199524b116c5f571b5b70
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jul 16 13:21:09 2021 -0400

    Use pango from the main branch
    
    Change the Pango subproject to use the main branch.
    
    This depends on
    https://gitlab.gnome.org/GNOME/pango/-/merge_requests/379

 subprojects/pango.wrap | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/subprojects/pango.wrap b/subprojects/pango.wrap
index 1de4db3c14..4376615341 100644
--- a/subprojects/pango.wrap
+++ b/subprojects/pango.wrap
@@ -2,4 +2,4 @@
 directory=pango
 url=https://gitlab.gnome.org/GNOME/pango.git
 push-url=git gitlab gnome org:GNOME/pango.git
-revision=master
+revision=main