Log Message:
py-test5: updated to 5.3.1

pytest 5.3.1:
Improvements
* Improve check for misspelling of pytest.mark.parametrize.
* Handle exit.Exception raised in notify_exception (via pytest_internalerror), \ 
e.g. when quitting pdb from post mortem.
Bug Fixes
* pytester: fix no_fnmatch_line when used after positive matching.
* Fix line detection for doctest samples inside property docstrings, as a \ 
workaround to bpo-17446.
* Fix compatibility with pytest-parallel (regression in pytest 5.3.0).
* Clear the sys.last_traceback, sys.last_type and sys.last_value attributes by \ 
deleting them instead of setting them to None. This better matches the behaviour \ 
of the Python standard library.