Is support IAM user or not？

[Xu-Hardy]

• aws-msk-iam-sasl-signer-python version: 1.0.1
• Python version:3.11
• Operating System: win/linux
• Method of installation: pip
• Kafka library name: [e.g. kafka-python] kafka-python
• Kafka library version：
• Provide us a sample code snippet of your producer/consumer

same as demo

Description

IAM user in this pip package report error，Failed to update metadata after 60000 ms

What I Did

I use IAM role can run demo code successful，but when i change to IAM user，it failed.

Paste the command(s) you ran and the output.
If there was a crash, please include the traceback here.

[github-actions]

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