Release notes:
https://download.gnome.org/sources/libxml2/2.15/libxml2-2.15.1.news
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit a67cff491a)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>