gnucash stable: Fix python tests on macOS by linking the right Python.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/e8673135 (commit)
	from  https://github.com/Gnucash/gnucash/commit/a5a67525 (commit)



commit e86731358e51df09b02f898793a6d0e66ef15e37
Author: John Ralls <jralls at ceridwen.us>
Date:   Thu Sep 25 12:46:43 2025 -0700

    Fix python tests on macOS by linking the right Python.



Summary of changes:
 CMakeLists.txt | 15 +++++++++++++++
 1 file changed, 15 insertions(+)