[gimp] libgimpwidgets: missing API in the def file.

[Jehan <jehanp src gnome org>]

commit 0593980864f7a5c72b2dfc5fd6df29b8e3704fe5
Author: Jehan <jehan girinstud io>
Date:   Mon Mar 7 18:03:18 2022 +0100

    libgimpwidgets: missing API in the def file.

 libgimpwidgets/gimpwidgets.def | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/libgimpwidgets/gimpwidgets.def b/libgimpwidgets/gimpwidgets.def
index 906a0936b9..e9ecbe6053 100644
--- a/libgimpwidgets/gimpwidgets.def
+++ b/libgimpwidgets/gimpwidgets.def
@@ -475,6 +475,7 @@ EXPORTS
        gimp_widget_get_color_profile
        gimp_widget_get_color_transform
        gimp_widget_get_monitor
+       gimp_widget_set_bound_property
        gimp_widget_set_identifier
        gimp_widget_track_monitor
        gimp_widgets_error_quark