git: openjdk/jfx21u: master: 8332539: Update libxml2 to 2.12.7

[Johan Vos]

Changeset: 1d2bc14d
Author:    Johan Vos <jvos at openjdk.org>
Date:      2024-06-04 17:52:55 +0000
URL:       https://git.openjdk.org/jfx21u/commit/1d2bc14df14d09a921194b273249e394fb1012ff

8332539: Update libxml2 to 2.12.7

Backport-of: dedcf1d236b5429dcf3c42f5fd1095b28d5da063

! modules/javafx.web/src/main/legal/libxml2.md
! modules/javafx.web/src/main/native/Source/ThirdParty/libxml/linux/config.h
! modules/javafx.web/src/main/native/Source/ThirdParty/libxml/linux/include/libxml/xmlversion.h
! modules/javafx.web/src/main/native/Source/ThirdParty/libxml/mac/config.h
! modules/javafx.web/src/main/native/Source/ThirdParty/libxml/mac/include/libxml/xmlversion.h
! modules/javafx.web/src/main/native/Source/ThirdParty/libxml/src/NEWS
! modules/javafx.web/src/main/native/Source/ThirdParty/libxml/src/configure.ac
! modules/javafx.web/src/main/native/Source/ThirdParty/libxml/src/xmlsave.c
! modules/javafx.web/src/main/native/Source/ThirdParty/libxml/win32/include/libxml/xmlversion.h