[gnome-build-meta/wip/exalm/gtk] sdk/gtk.bst: Update to a newer commit

[Alexander Mikhaylenko <alexm src gnome org>]

commit abd83f830525686d57eb71ddd6d34cf464b94f79
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sat Oct 15 17:24:34 2022 +0000

    sdk/gtk.bst: Update to a newer commit
    
    Include the popover fix.

 elements/sdk/gtk.bst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/elements/sdk/gtk.bst b/elements/sdk/gtk.bst
index a566d208a..30bb96bb7 100644
--- a/elements/sdk/gtk.bst
+++ b/elements/sdk/gtk.bst
@@ -4,7 +4,7 @@ sources:
 - kind: git_tag
   url: gnome:gtk.git
   track: main
-  ref: 4.8.1-270-g1d2071b8922fc80f5228743ca0980e870abc0f49
+  ref: 4.8.1-276-gca2e14788dc70cc122ce36b18825d3a250a7e753
 
 build-depends:
 - sdk-deps/gi-docgen.bst