update python_requires

Author: Technologicat

setup.py

@@ -74,7 +74,7 @@ def read(*relpath, **kwargs):  # https://blog.ionelmc.ro/2014/05/25/python-packa
               "tail-call-optimization", "tco", "continuations", "currying", "lazy-evaluation",
               "dynamic-variable", "macros", "lisp", "scheme", "racket", "haskell"],
     install_requires=[],  # mcpyrate is optional for us, so we can't really put it here even though we recommend it.
-    python_requires=">=3.6,<3.11",
+    python_requires=">=3.8,<3.11",
     author="Juha Jeronen",
     author_email="[email protected]",
     url="https://github.com/Technologicat/unpythonic",