fix: require typing_extensions with Self support

Python 3.10 imports Self from typing_extensions. Require the first release that provides it so dependency resolution cannot silently install an incompatible older version.

Assisted-by: OpenAI Codex
Signed-off-by: 李永祺 <doribelove@gmail.com>

Author: Doribelove

pyproject.toml

@@ -37,7 +37,7 @@ dependencies = [
     "scipy",
     "matplotlib",
     "ansitable",
-    "typing_extensions",
+    "typing_extensions>=4.0.0",
     "pre-commit",
 ]