add python3.12 to nox

Author: tasansal

noxfile.py

@@ -23,7 +23,7 @@
 
 
 package = "mdio"
-python_versions = ["3.11", "3.10", "3.9"]
+python_versions = ["3.12", "3.11", "3.10", "3.9"]
 nox.needs_version = ">= 2022.1.7"
 nox.options.sessions = (
     "pre-commit",