gnucash-on-flatpak master: Update Gwenhywfar to 5.12.2.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-on-flatpak/commit/805043b6 (commit)
	from  https://github.com/Gnucash/gnucash-on-flatpak/commit/159827b4 (commit)



commit 805043b60970bf6e6f46028127c40f15a5a3f05e
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Sep 16 10:29:47 2025 -0700

    Update Gwenhywfar to 5.12.2.



Summary of changes:
 modules/aqbanking.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)