Update pyproject.toml

Accepted python versions refreshed.

Author: izar

pyproject.toml

@@ -1,12 +1,12 @@
 [tool.poetry]
 name = "pytm"
-version = "1.2.0"
+version = "1.3.1"
 description = "A Pythonic framework for threat modeling"
 authors = ["pytm Team"]
 license = "MIT License"
 
 [tool.poetry.dependencies]
-python = "^3.9 || ^3.8 || ^3.7 || ^3.6"
+python = "^3.11 || ^3.10 || ^3.9 || ^3.8"
 pydal = "~20200714.1"
 
 [tool.poetry.dev-dependencies]