Bump isort[pipfile] from 5.0.7 to 5.2.2

Bumps [isort[pipfile]](https://github.com/timothycrosley/isort) from 5.0.7 to 5.2.2.
- [Release notes](https://github.com/timothycrosley/isort/releases)
- [Changelog](https://github.com/timothycrosley/isort/blob/develop/CHANGELOG.md)
- [Commits](PyCQA/isort@5.0.7...5.2.2)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements-dev.txt

@@ -2,5 +2,5 @@ coveralls==2.1.1
 pytest==5.4.3
 pytest-vcr==1.0.2
 black==19.10b0
-isort[pipfile]==5.0.7
+isort[pipfile]==5.2.2
 flake8==3.8.3