gnucash-on-flatpak master: Revert Alien::LibXML2 to 0.19

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-on-flatpak/commit/f38ec677 (commit)
	from  https://github.com/Gnucash/gnucash-on-flatpak/commit/5bd17272 (commit)



commit f38ec677a94822924186bdee60fabc224fed4691
Author: John Ralls <jralls at ceridwen.us>
Date:   Mon May 26 18:15:23 2025 -0700

    Revert Alien::LibXML2 to 0.19
    
    They went a little wild declaring almost all of libxml 2.11, 12, and 13 unusable.



Summary of changes:
 modules/finance-quote-sources.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)