[gnome-builder/wip/gtk4-port] build: add libadwaita_dep

[Christian Hergert <chergert src gnome org>]

commit 4ac59fef2134a59c23a252e2c52d231eef6a1b65
Author: Christian Hergert <chergert redhat com>
Date:   Fri Sep 24 10:25:41 2021 -0700

    build: add libadwaita_dep

 meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/meson.build b/meson.build
index c2de2e04f..ab8fc6c13 100644
--- a/meson.build
+++ b/meson.build
@@ -285,6 +285,7 @@ libglib_dep = dependency('glib-2.0', version: glib_req)
 libgio_dep = dependency('gio-2.0', version: glib_req)
 libgiounix_dep = dependency('gio-unix-2.0', version: glib_req)
 libgtk_dep = dependency('gtk4', version: gtk_req)
+libadwaita_dep = dependency('libadwaita-1')
 libgtksource_dep = dependency('gtksourceview-5', version: gtksourceview_req)
 libjson_glib_dep = dependency('json-glib-1.0', version: '>= 1.2.0')
 libjsonrpc_glib_dep = dependency('jsonrpc-glib-1.0', version: '>= 3.29.91')