What happened?

Protobuf MacOS wheels for 3.19.5, 3.19.6 and 3.20.x are removed because there are some errors on M1 Mac and the protobuf team couldn't able to figure out the root cause. These wheels were rolled back on September 13th and the protobuf-3.19.x-py2.py3-none-any.whl wheels are not working for generating protos, leading to test failures on MacOS with GH actions

So for Python 3.10 and MacOS target platform, use protobuf==3.19.4 until Apache Beam upgrades to protobuf>=4.21.1

Issue Priority

Priority: 2

Issue Component

Component: sdk-py-core