unittest and check_dev_2 always timeout after dependency updated

[peng1999]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

#31122 and #31010 both updated kvproto to a version which requires changes on pd and go-client and both of them cannot pass the unittest due to a timeout.

2. What did you expect to see? (Required)

N/A

3. What did you see instead (Required)

N/A

4. What is your TiDB version? (Required)

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[jebter]

Please try the latest version. I will close it,if there are any updates, you can reopen it.