[gimp] extensions: goat-exercise appdata depends on po files.

[Jehan <jehanp src gnome org>]

commit 5c03dd167746b00faa6e50a9cc4e59b1f8cda9d3
Author: Jehan <jehan girinstud io>
Date:   Thu Oct 22 17:18:43 2020 +0200

    extensions: goat-exercise appdata depends on po files.
    
    Make sure we regenerate the appdata file when po files are updated. It
    should not be too much of a problem for release builds made from
    scratch, but on incremental dev builds, the appdata was not regenerated
    even when new translation got added.

 extensions/goat-exercises/meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/extensions/goat-exercises/meson.build b/extensions/goat-exercises/meson.build
index decbcdd41d..d53b54847a 100644
--- a/extensions/goat-exercises/meson.build
+++ b/extensions/goat-exercises/meson.build
@@ -108,6 +108,7 @@ appdatafilein = configure_file(
 appdatafile = custom_target(appdatafilename,
   input : [ appdatafilein, ],
   output: [ appdatafilename, ],
+  depend_files: [ po_plug_ins_dir ],
   command: [
     intltool_merge,
     po_plug_ins_dir,