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:

• lonng
• overvenus

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[lonng]

/merge

[ti-chi-bot]

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

Commit hash: b6ca697

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (release-5.1@e6a8138). Click here to learn what that means.
The diff coverage is n/a.

@@               Coverage Diff                @@
##             release-5.1      #2176   +/-   ##
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  Coverage               ?   54.0185%           
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  Files                  ?        164           
  Lines                  ?      17581           
  Branches               ?          0           
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  Hits                   ?       9497           
  Misses                 ?       7068           
  Partials               ?       1016           

[ti-chi-bot]

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/run-all-tests

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