[gnome-builder] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit 016c3bcb96e8c8ca184a48fd2bbd419542ec757f
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Aug 28 13:33:24 2021 +0200

    Update POTFILES.in

 po/POTFILES.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index e10b85c60..5dd7e7ff0 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -267,6 +267,7 @@ src/plugins/flatpak/gbp-flatpak-pipeline-addin.c
 src/plugins/flatpak/gbp-flatpak-runner.c
 src/plugins/flatpak/gbp-flatpak-runtime.c
 src/plugins/flatpak/gbp-flatpak-runtime-provider.c
+src/plugins/flatpak/gbp-flatpak-sdk-stage.c
 src/plugins/gcc/gbp-gcc-toolchain-provider.c
 src/plugins/gettext/ide-gettext-diagnostic-provider.c
 src/plugins/git/daemon/ipc-git-change-monitor-impl.c