gnucash maint: Release GnuCash 4.6

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/228954c4 (commit)
	from  https://github.com/Gnucash/gnucash/commit/605d11ac (commit)



commit 228954c4084d09cedacfec279883011e8377bdf3
Author: John Ralls <jralls at ceridwen.us>
Date:   Sat Jun 26 14:11:18 2021 -0700

    Release GnuCash 4.6



Summary of changes:
 CMakeLists.txt |   2 +-
 NEWS           | 168 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 169 insertions(+), 1 deletion(-)