gnucash stable: Release GnuCash 5.6

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/ac915f34 (commit)
	from  https://github.com/Gnucash/gnucash/commit/79026d6a (commit)



commit ac915f34f737c30469a2fba9a90c06895d4c7227
Author: John Ralls <jralls at ceridwen.us>
Date:   Sat Mar 30 15:00:10 2024 -0700

    Release GnuCash 5.6



Summary of changes:
 CMakeLists.txt |    3 +-
 ChangeLog.2023 | 7496 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 NEWS           |   70 +
 3 files changed, 7568 insertions(+), 1 deletion(-)
 create mode 100644 ChangeLog.2023