python312Packages.hypothesmith: Disable failing test

This test now fails with black 24.8.0+, so it is disabled until
(hopefully) upstream releases a new version that addresses this.

pkgs/development/python-modules/hypothesmith/default.nix

···
   disabledTests = [
     # super slow
     "test_source_code_from_libcst_node_type"
+    # https://github.com/Zac-HD/hypothesmith/issues/38
+    "test_black_autoformatter_from_grammar"
   ];
 
   pythonImportsCheck = [ "hypothesmith" ];