Bumps pathspec from 0.8.0 to 0.8.1.
Sourced from pathspec's changelog.
0.8.1 (2020-11-07)
Issue [#43](https://github.com/cpburnz/python-path-specification/issues/43)_: Add support for addition operator... _
Issue [#43](https://github.com/cpburnz/python-path-specification/issues/43): https://github.com/cpburnz/python-path-specification/pull/43