[gnome-builder] build: reduce various SDK dependency versions

[Christian Hergert <chergert src gnome org>]

commit 6f2ed62fab454c1bc974ac748439da4a636839c9
Author: Christian Hergert <chergert redhat com>
Date:   Tue Sep 20 17:30:00 2022 -0700

    build: reduce various SDK dependency versions
    
    To keep CI going.

 meson.build | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/meson.build b/meson.build
index 38ea06e5e..81df9d9ce 100644
--- a/meson.build
+++ b/meson.build
@@ -34,9 +34,9 @@ pkggirdir = join_paths(get_option('datadir'),'gnome-builder', 'gir-1.0')
 pkgtypelibdir = join_paths(get_option('libdir'), 'gnome-builder', 'girepository-1.0')
 
 # Check dependencies
-glib_req_version = '2.74'
+glib_req_version = '2.73.3'
 gtk_req_version = '4.8'
-gtksourceview_req_version = '5.6'
+gtksourceview_req_version = '5.5.2'
 libadwaita_req_version = '1.2.0'
 
 glib_req = '>= @0@'.format(glib_req_version)