Bump pytest from 5.4.3 to 6.0.2

Bumps [pytest](https://github.com/pytest-dev/pytest) from 5.4.3 to 6.0.2.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@5.4.3...6.0.2)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

poetry.lock

@@ -9,7 +9,7 @@ python = "^3.8"
 loguru = "^0.5.2"
 
 [tool.poetry.dev-dependencies]
-pytest = "^5.2"
+pytest = "^6.0"
 pre-commit = "^2.7.1"
 black = "^20.8b1"