build(tox): add 3.14 support

Author: Lee-W

pyproject.toml

@@ -174,7 +174,7 @@ testpaths = ["tests/"]
 
 [tool.tox]
 requires = ["tox>=4.22"]
-env_list = ["3.9", "3.10", "3.11", "3.12", "3.13"]
+env_list = ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
 [tool.tox.env_run_base]
 description = "Run tests suite against Python {base_python}"