chore(deps): update dependency pytest to v7

Author: renovate-bot

poetry.lock

@@ -37,7 +37,7 @@ pre-commit = "^2.13.0"
 codecov = "^2.1.11"
 pylint = "^2.8.2"
 isort = "^5.8.0"
-pytest = "^6.2.4"
+pytest = "^7.0.0"
 flake8 = "^4.0.0"
 mypy = "^0.941"
 coverage = "^6.3"