[gnome-builder] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit 64a5413c2f9eb4f385859a47d01bd79dd19472dc
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Fri Jun 1 11:56:45 2018 +0200

    Update POTFILES.in

 po/POTFILES.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 18742c70f..8746bb781 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -187,6 +187,7 @@ src/plugins/html-preview/gtk/menus.ui
 src/plugins/html-preview/html_preview.py
 src/plugins/jedi/jedi_plugin.py
 src/plugins/make/make_plugin.py
+src/plugins/maven/maven_plugin.py
 src/plugins/meson/gbp-meson-build-system.c
 src/plugins/meson/gbp-meson-pipeline-addin.c
 src/plugins/meson/gbp-meson-toolchain.c