Update Python version classifiers in pyproject.toml

Author: Garulf

pyproject.toml

@@ -13,8 +13,12 @@ requires-python = ">=3.8"
 license = { text = "MIT" }
 classifiers = [
     "License :: OSI Approved :: MIT License",
-    "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Typing :: Typed"
 ]
 dependencies = [
     'typing_extensions>=4.8.0; python_version < "3.11"'