add link to issue in suppressions

Author: kumaraditya303

Tools/tsan/suppressions_free_threading.txt

@@ -43,7 +43,9 @@ race_top:write_thread_id
 race_top:PyThreadState_Clear
 # Only seen on macOS, sample: https://gist.github.com/aisk/dda53f5d494a4556c35dde1fce03259c
 race_top:set_default_allocator_unlocked
+# See https://github.com/python/cpython/pull/128147
 race_top:_PyFrame_GetBytecode
+race_top:BaseException_set_tb
 
 
 # https://gist.github.com/mpage/6962e8870606cfc960e159b407a0cb40