tools: only diff the go.mod and go.sum (#2163)

[ti-chi-bot]

This is an automated cherry-pick of #2163

What problem does this PR solve?

None

What is changed and how it works?

Only diff go.sum, otherwise there will be a lot of diff information after modifying the other codes.

Check List

Tests

• No code

Code changes

None

Side effects

None

Related changes

• Need to cherry-pick to the release branch

Release note

• No release note

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• amyangfei

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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

Reviewer can indicate their review by submitting an approval review.
Reviewer can cancel approval by submitting a request changes review.

[amyangfei]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: aac0fd1

[codecov-commenter]

Codecov Report

Merging #2174 (5fa65ca) into release-4.0 (753073a) will decrease coverage by 0.0535%.
The diff coverage is 62.2366%.

@@                 Coverage Diff                 @@
##           release-4.0      #2174        +/-   ##
===================================================
- Coverage      53.7661%   53.7125%   -0.0536%     
===================================================
  Files              153        163        +10     
  Lines            15958      17333      +1375     
===================================================
+ Hits              8580       9310       +730     
- Misses            6475       7041       +566     
- Partials           903        982        +79