-r requirements.txt

flake8==3.7.7
tox==3.12.1
pytest==4.6.2

-r requirements.txt

flake8==3.7.7
tox==3.12.1
pytest==4.6.3

Bump pytest from 4.6.2 to 4.6.3
Bump pytest from 4.6.2 to 4.6.3

Bumps [pytest](https://github.com/pytest-dev/pytest) from 4.6.2 to 4.6.3.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest/compare/4.6.2...4.6.3)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>