[xsl] Project json2xml to support json-to-xml of XPath 3.1

["Schimon Jehudah sch@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Good evening.

I have recently asked at several Python projects that involve XML, to
support the concersion of JSON to XML as does function json-to-xml of
XPath 3.1 version.

Mr. Vinit Kumar has acted upon this request, and he asked me to test it.

I am not available to test it, for a couple of days or so; and, I would
be glad if someone would kindly assist and confirm that it works as
should.

https://github.com/vinitkumar/json2xml/pull/259#issuecomment-3595273272

Best regards,
Schimon