git: openjdk/jfx17u: master: 8332539: Update libxml2 to 2.12.7

[Johan Vos]

Changeset: 14575c54
Author:    Johan Vos <jvos at openjdk.org>
Date:      2024-06-04 17:51:19 +0000
URL:       https://git.openjdk.org/jfx17u/commit/14575c54a2b665384bbf4d81a1e2672912691562

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