python3-soupsieve: fix ptests

Some ptests have started to fail, due to a change in libxml 2.9.12 (oe-core
ships with 2.9.14 currently).
See upstream issue: https://github.com/facelessuser/soupsieve/issues/220

This backported patch solves this issue.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

meta-python/recipes-devtools/python/python3-soupsieve_2.3.1.bb

@@ -10,6 +10,7 @@ inherit pypi python_setuptools_build_meta ptest
 
 SRC_URI += " \
         file://run-ptest \
+        file://update_tests_for_latest_libxml.patch \
 "
 
 RDEPENDS:${PN}-ptest += " \