[gimp/wip/Jehan/debug-flatpak] No idea why the flatpak-builder.log file is not included in the artifacts.

[Jehan <jehanp src gnome org>]

commit ee24bce4d4bd4dd81e4fc1321508df1acedb56de
Author: Jehan <jehan girinstud io>
Date:   Sun Aug 22 12:24:34 2021 +0200

    No idea why the flatpak-builder.log file is not included in the artifacts.

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index eab62d4a09..f572b24268 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -609,6 +609,7 @@ flatpak:
     # > Job execution will continue but no more output will be collected.
     # To make debugging actually possible, let's save logs as a file.
     - flatpak-builder --user --disable-rofiles-fuse flatpak_app --repo=repo 
${BRANCH:+--default-branch=$BRANCH} ${MANIFEST_PATH} > flatpak-builder.log 2>&1
+    - sync
     # Generate a Flatpak bundle
     - flatpak build-bundle repo ${BUNDLE} --runtime-repo=${RUNTIME_REPO} ${APP_ID} ${BRANCH}
     - tar cf repo.tar repo/