Update typing conformance suite commit (#23606)

Co-authored-by: Claude <noreply@anthropic.com>

Author: AlexWaygood

.github/workflows/typing_conformance.yaml

@@ -34,7 +34,7 @@ env:
   CARGO_TERM_COLOR: always
   RUSTUP_MAX_RETRIES: 10
   RUST_BACKTRACE: 1
-  CONFORMANCE_SUITE_COMMIT: 21b07859158d2d10ed7fe8d9b365412518ed9888
+  CONFORMANCE_SUITE_COMMIT: e9fccc9dbbd8f1e8b24b4f88911c3d3155059e2a
   PYTHON_VERSION: 3.12
 
 jobs: