community/py3-typed-ast: fix linking against wrong lib
Due to symbol coliissions with python, some parts are incorrectly linked against python instead of typed-ast. This causes struct layout mismatches, which specifically impacted s390x, due to being big-endian.
This was uncovered by the black test suite, which resulted in an error message:
SyntaxError: can't assign to ()
Upstream provided a patch to mitigate this issue.