Internal xml minidom API changed in Python 3.13 (_write_data)

[oysstu]

Python 3.13 has merged gh-50002, which changes the API of the internal _write_data function (issue, PR).

Used here:

xacro/xacro/xmlutils.py

Line 123 in e956f94

xml.dom.minidom._write_data(writer, attrs[a_name].value)

The new parameter "attr" seem to enable some additional escaping for attributes. Looks like an attribute is being written here, so should probably be set to true (or better yet, find a replacement in the public API).