tidb: TiDB v2.1.2 build failed for wrong tidb-tools version

Bug Report

1. What did you do?

I’m the maintainer of tidb on AUR, and also the maintainer from archlinuxcn which provides tidb binary.

I tried to bump tidb version to 2.1.2 but failed error.

1. What did you expect to see?

I expect to see tidb built with success.

1. What did you see instead?

tidb build failed with error:

# command-line-arguments
tidb-server/main.go:193:17: undefined: client.NewLocalPumpsClient

1. What version of TiDB are you using (tidb-server -V or run select tidb_version(); on TiDB)?

v2.1.2

---

Some more info:

NewLocalPumpsClient was introduced in PR https://github.com/pingcap/tidb/pull/8747, but in this pr, go.mod has been set to 2.1.1 instead of 2.1.2: https://github.com/pingcap/tidb/pull/8747/files#diff-37aff102a57d3d7b797f152915a6dc16L53

And NewLocalPumpsClient was introduced in commit which tagged to 2.1.2