Use CPython 3.14 final in test and CI config

Author: ogrisel

.github/workflows/testing.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python_version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14-dev", "pypy-3.9"]
+        python_version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "pypy-3.9"]
         exclude:
           # Do not test all minor versions on all platforms, especially if they
           # are not the oldest/newest supported versions

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{38, 39, 310, 311, 312, 313, py3}
+envlist = py{38, 39, 310, 311, 312, 313, 314, py3}
 
 [testenv]
 deps = -rdev-requirements.txt