Programming Language :: Python :: Free Threading (#488)

```diff
-        "Programming Language :: Python :: 3.14t",
+        "Programming Language :: Python :: Free Threading",
```
https://pypi.org/classifiers

Author: cclauss

setup.py

@@ -60,7 +60,7 @@ def get_version():
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
         "Programming Language :: Python :: 3.14",
-        "Programming Language :: Python :: 3.14t",
+        "Programming Language :: Python :: Free Threading",
         "Framework :: Django :: 4.2",
         "Framework :: Django :: 5.1",
         "Framework :: Django :: 5.2",