CI to catch incompatible updates of proto files

[vigith]

I see several files were updated in this PR from "Protobuf Python Version: 4.25.1" to "Protobuf Python Version: 6.31.1":
https://github.com/numaproj/numaflow-python/pull/250/changes#diff-e63ec56ffe8112f354bb57291ab232155bea9ec15e62c6db29aa697c08a092ab

Originally posted by @khneal in #318 (comment)