feat: add free-threading classifiers

Signed-off-by: Henry Schreiner <[email protected]>

Author: henryiii

src/trove_classifiers/__init__.py

@@ -526,6 +526,10 @@
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: Free Threading :: Unstable",
+    "Programming Language :: Python :: Free Threading :: Beta",
+    "Programming Language :: Python :: Free Threading :: Stable",
+    "Programming Language :: Python :: Free Threading :: Resilient",
     "Programming Language :: Python :: Implementation",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: IronPython",