update utf go build image

[ti-chi-bot[bot]]

I have already done a preliminary review for you, and I hope to help you do a better job.

Based on the pull request title and the diff, it seems the change is updating the Docker image used for building Go code from hub.pingcap.net/chenpeng/golang:1.18 to hub.pingcap.net/jenkins/centos7_golang-1.21:latest.

Potential problems:

• The new Docker image may not be compatible with the existing build script or may introduce new issues.
• The new Docker image may have different dependencies or configurations that may affect the build process or the resulting binary.

Fixing suggestions:

• Verify that the new Docker image is compatible with the existing build script and has all the required dependencies installed.
• Test the build process with the new Docker image and verify that it produces the expected results.
• Consider adding a step in the CI/CD pipeline to automatically pull and test the new Docker image before deploying it to production.

Overall, it's a simple change, but it's important to ensure that the new Docker image doesn't introduce any unexpected issues.

[wuhuizuo]

/lgtm /approve

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: wuhuizuo

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files: - ~~[jenkins/OWNERS](https://github.com/PingCAP-QE/ci/blob/main/jenkins/OWNERS)~~ [wuhuizuo] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2024-05-14 08:56:28.847668917 +0000 UTC m=+1557142.604804485: :ballot_box_with_check: agreed by wuhuizuo.