Revert updating python version

Author: Bobronium

pyproject.toml

@@ -15,7 +15,7 @@ keywords = ["cli", "commands"]
 
 # Requirements
 [tool.poetry.dependencies]
-python = "^3.6.2"
+python = "^3.6"
 pylev = "^1.3.0"
 crashtest = "^0.3.1"
 
@@ -25,6 +25,7 @@ pytest-mock = "^3.4.0"
 pre-commit = {version = "^2.9.3", python = "^3.6.1"}
 pytest-cov = "^2.10.1"
 tox = "^3.20.1"
+black = "22.3.0"  # exact version as in pre-commit
 isort = "^5.6.4"
 flake8 = "^3.8.4"