Log Message:
pugixml: update to 1.12.

v1.12 2022-02-09

Maintenance release. Changes:

    Bug fixes:

	Fix a bug in xml_document move construction when the source
	of the move is empty

	Fix const-correctness issues with iterator objects to
	support C++20 ranges

    XPath improvements:

	Improved detection of overly complex queries that may result
	in stack overflow during parsing

    Compatibility improvements:

        Fix Cygwin support for DLL builds

        Fix Windows CE support

        Add NuGet builds and project files for VS2022

    Build system changes

	All CMake options now have the prefix PUGIXML_. This may
	require changing dependent build configurations.

	Many build settings are now exposed via CMake settings,
	most notably PUGIXML_COMPACT and PUGIXML_WCHAR_MODE can be
	set without changing pugiconfig.hpp