Bump pytest from 6.2.5 to 7.1.2 (#65)

Author: dependabot[bot]

poetry.lock

@@ -29,7 +29,7 @@ responses = "^0.10.9"
 coverage = "^5.0.3"
 black = "^19.10b0"
 wemake-python-styleguide = "^0.13.4"
-pytest = "^6.0.0"
+pytest = "^7.1.2"
 pytest_mock = "^2.0.0"
 pre-commit = "^2.0.1"
 mkdocs = "^1.2.3"