gnucash stable: Bulgarian Lev (BGN) replaced by Euro 1 Jan 2026.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/6907d364 (commit)
	from  https://github.com/Gnucash/gnucash/commit/465959cc (commit)



commit 6907d3648ad6dbd386afc748eff018ec97de2ca9
Author: John Ralls <jralls at ceridwen.us>
Date:   Mon Dec 8 12:20:00 2025 -0800

    Bulgarian Lev (BGN) replaced by Euro 1 Jan 2026.



Summary of changes:
 libgnucash/engine/gnc-euro.cpp            | 1 +
 libgnucash/engine/iso-4217-currencies.xml | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)