Libxml2 2.11.4 released

Platform
,
#1

https://download.gnome.org/sources/libxml2/2.11/libxml2-2.11.4.tar.xz (2.51M)
sha256sum: 737e1d7f8ab3f139729ca13a2494fd17bf30ddb4b7a427cf336252cab57f57f7

Fixes a serious regression.

  • parser: Fix regression when push parsing UTF-8 sequences