:bug: Fix ImportError that could occurs on older Python 3.5.x (#100)
:bug: Fix ImportError that could occurs on older Python 3.5.x (#100)

* :bug: Fix ImportError that could occurs on older Python 3.5.x

First discovered by https://github.com/ros-infrastructure/ros_buildfarm/pull/905 Not all Python 3.5.x are concerned. Latest minor is OK.

* :wrench: disable test coverage on PathLike import failure
ousret/charset_normalizer,Ousret/charset_normalizer,Ousret/charset_normalizer,ousret/charset_normalizer