gnucash-on-osx master: Multiple changes pushed

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-on-osx/commit/8420f6f3 (commit)
	 via  https://github.com/Gnucash/gnucash-on-osx/commit/93f30bab (commit)
	 via  https://github.com/Gnucash/gnucash-on-osx/commit/f6066786 (commit)
	from  https://github.com/Gnucash/gnucash-on-osx/commit/6053ca41 (commit)



commit 8420f6f38c5e0591ced24048ea2f1251e5a365c8
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Jun 16 13:05:15 2026 -0700

    [deps tarball] Instruct to clean the build and inst dirs.

commit 93f30bab19bde2a20ea3c18af44a7067223f9ced
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Jun 16 13:03:03 2026 -0700

    [deps tarball]Update ICU version to 78, that's what gtk-osx builds now.

commit f6066786458a7bab8679d70206b33d065fad1cc1
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Jun 16 13:01:20 2026 -0700

    Adjust boost-cmake.patch to work with the currently set C++ standard.
    
    Instead of hard-coding 17. GnuCash's next major release (6.0) will use C++23.



Summary of changes:
 README.markdown           | 15 +++++++++++++--
 dependencies.txt          |  8 ++++----
 patches/boost-cmake.patch |  2 +-
 3 files changed, 18 insertions(+), 7 deletions(-)