message: Unfreeze protobuf version
diff: @@ -55,7 +55,7 @@ REQUIRED_PACKAGES = [
  # issue is resolved.
  'flatbuffers >= 1.12, <2',
  # The Protobuf version needs to be the same as the one in WORKSPACE.
  - 'protobuf == 3.18.0',
  + 'protobuf >= 3.18.0',
  'sounddevice >= 0.4.4',
  ] + SETUP_PACKAGES
  