3.14 is available from GH's setup-python action

Author: clin1234

.github/workflows/ci.yml

@@ -242,6 +242,7 @@ jobs:
             "3.11",
             "3.12",
             "3.13",
+            "3.14-dev",
             "pypy3.9",
             "pypy3.10",
             "graalpy24.0",