[gimp] build: upstream flathub build and base modules updated too.

[Jehan Pagès <jehanp src gnome org>]

commit d2c4db1984d5266be76b5698c09e323c4bae13f5
Author: Jehan <jehan girinstud io>
Date:   Fri Apr 6 21:08:34 2018 +0200

    build: upstream flathub build and base modules updated too.

 build/flatpak/flathub |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/build/flatpak/flathub b/build/flatpak/flathub
index 1c24cce..f3016af 160000
--- a/build/flatpak/flathub
+++ b/build/flatpak/flathub
@@ -1 +1 @@
-Subproject commit 1c24cce9aa8d2689308ddac12dc03f6a238255f7
+Subproject commit f3016af77c684beafd8e26dfc990317305687350