Bump the typing conformance suite pin (#22960)

Author: AlexWaygood

.github/workflows/typing_conformance.yaml

@@ -30,7 +30,7 @@ env:
   CARGO_TERM_COLOR: always
   RUSTUP_MAX_RETRIES: 10
   RUST_BACKTRACE: 1
-  CONFORMANCE_SUITE_COMMIT: dece44f2922ca390fe314145d09939514a21e76e
+  CONFORMANCE_SUITE_COMMIT: 08f929ba70397b5c898a55bbb73c8b4e2e8e4fbb
   PYTHON_VERSION: 3.12
 
 jobs: