gnucash stable: Multiple changes pushed

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/5005c3ca (commit)
	 via  https://github.com/Gnucash/gnucash/commit/ae8492d7 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/5a7b6e98 (commit)
	from  https://github.com/Gnucash/gnucash/commit/c473ae0e (commit)



commit 5005c3cac8419a5513559e6ef2c808551218f9ce
Merge: c473ae0e38 ae8492d73a
Author: John Ralls <jralls at ceridwen.us>
Date:   Thu Dec 7 17:31:33 2023 -0800

    Merge Sherlock's 'bug799151' into stable.

commit ae8492d73a769fe315a2839dc865e82b0cf1e89a
Author: Sherlock <119709043+agwekixj at users.noreply.github.com>
Date:   Tue Dec 5 13:18:51 2023 -0800

    Update test-gnc-date.c

commit 5a7b6e9814be2a9639b8229ac877ad68eb27090a
Author: Sherlock <119709043+agwekixj at users.noreply.github.com>
Date:   Tue Dec 5 12:40:43 2023 -0800

    Bug 799151 - gnc_date_get_last_mday () does not account for,,,
    
    leap years correctly.



Summary of changes:
 libgnucash/engine/gnc-date.cpp         | 20 ++++++++++----------
 libgnucash/engine/test/test-gnc-date.c |  3 ++-
 2 files changed, 12 insertions(+), 11 deletions(-)