Declare support for Python 3.14 (#10577)

Author: hugovk

pyproject.toml

@@ -25,6 +25,7 @@ classifiers = [
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
   "Topic :: Software Development :: Debuggers",
@@ -223,6 +224,9 @@ tests/functional/t/type/typevar_naming_style_default.py,\
 tests/functional/m/member/member_checks_async.py,\
 """
 
+[tool.pyproject-fmt]
+max_supported_python = "3.14"
+
 [tool.pytest.ini_options]
 testpaths = [ "tests" ]
 python_files = [ "*test_*.py" ]

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.0
-envlist = formatting, py310, py311, py312, py313, pypy, benchmark
+envlist = formatting, py310, py311, py312, py313, py314, pypy, benchmark
 skip_missing_interpreters = true
 requires = pip >=21.3.1
 isolated_build = true