[gnome-control-center] Bump libhandy to 1.2.0

[Robert Ancell <rancell src gnome org>]

commit e30c6a9130e7ea8a5ff3ab711045cbebd49a202a
Author: Ian Douglas Scott <idscott system76 com>
Date:   Fri Mar 12 10:29:08 2021 -0800

    Bump libhandy to 1.2.0

 meson.build          | 2 +-
 subprojects/libhandy | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/meson.build b/meson.build
index b26efe8fb..d791043c2 100644
--- a/meson.build
+++ b/meson.build
@@ -99,7 +99,7 @@ libgvc = subproject(
 )
 libgvc_dep = libgvc.get_variable('libgvc_dep')
 
-libhandy_dep = dependency('libhandy-1', version: '>= 1.0.0', required: false)
+libhandy_dep = dependency('libhandy-1', version: '>= 1.2.0', required: false)
 if not libhandy_dep.found()
   libhandy = subproject(
     'libhandy',
diff --git a/subprojects/libhandy b/subprojects/libhandy
index fd76b1e5a..7b38a860f 160000
--- a/subprojects/libhandy
+++ b/subprojects/libhandy
@@ -1 +1 @@
-Subproject commit fd76b1e5a3ea6f05723a52a4f6592c38330b08fa
+Subproject commit 7b38a860ffcec6c2ad28153358cc3d037ddb618f