dumpling integration test always fail

[lance6716]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

server version returns 5.7.25-TiDB-5584f12 and lightning will panic because failed to parse this verison

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

no error

3. What did you see instead (Required)

https://github.com/pingcap/tidb/runs/8187302242?check_suite_focus=true

4. What is your TiDB version? (Required)

[lance6716]

introduced by #37227