[gnome-builder/wip/gtk4-port] plugins/color-picker: add missing include

[Christian Hergert <chergert src gnome org>]

commit 8bdefa40e940c488fa0059658ff498abeb45f5ac
Author: Christian Hergert <chergert redhat com>
Date:   Mon Mar 28 14:23:45 2022 -0700

    plugins/color-picker: add missing include

 src/plugins/color-picker/gstyle/gstyle-color-panel-private.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/color-picker/gstyle/gstyle-color-panel-private.h 
b/src/plugins/color-picker/gstyle/gstyle-color-panel-private.h
index 412dea35b..dedbd50c3 100644
--- a/src/plugins/color-picker/gstyle/gstyle-color-panel-private.h
+++ b/src/plugins/color-picker/gstyle/gstyle-color-panel-private.h
@@ -20,7 +20,7 @@
 
 #pragma once
 
-#include <glib-object.h>
+#include <libide-search.h>
 
 #include "gstyle-cielab.h"
 #include "gstyle-color.h"