Package doesn't work with protobuf 4.21.0

[kucharzyk-sebastian]

Hi,

A new version of the protobuf library was released yesterday (4.21.0). SInce then, new installations of aliyun-log-python-sdk don't work at all. It fails on import:

TypeError: Descriptors cannot not be created directly.
If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc >= 3.19.0.
If you cannot immediately regenerate your protos, some other possible workarounds are:
 1. Downgrade the protobuf package to 3.20.x or lower.
 2. Set PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python (but this will use pure-Python parsing and will be much slower)

I believe there should be an upper limit of the protobuf version in the library.

[kucharzyk-sebastian]

And here's a PR that should fix the issue.

[alfiewm]

Saw same error, temporarily workaround it by downgrade protobuf to a compatible version.

pip install --upgrade protobuf==3.20.1