go.mod: upgrade gin version from v1.8.1 to v1.9.1 (#7451)

[ti-chi-bot]

This is an automated cherry-pick of #7451

What problem does this PR solve?

Issue Number: Close #7438

What is changed and how does it work?

Upgrade Gin version to v1.9.1 to solve some security issues

Check List

Tests

• Integration test
• Manual test (add detailed scripts or steps below)

Code changes

Side effects

Related changes

• Need to cherry-pick to the release branch

Release note

Upgrade Gin version to v1.9.1 to solve some security issues.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• CabinfeverB
• rleungx

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (dbce3fb) 75.61% compared to head (25668f9) 75.54%.

Additional details and impacted files

@@               Coverage Diff               @@
##           release-6.5    #7459      +/-   ##
===============================================
- Coverage        75.61%   75.54%   -0.07%     
===============================================
  Files              332      332              
  Lines            33745    33745              
===============================================
- Hits             25515    25494      -21     
- Misses            6040     6052      +12     
- Partials          2190     2199       +9     

Flag	Coverage Δ
unittests	75.54% <ø> (-0.07%)	⬇️

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[rleungx]

/merge

[ti-chi-bot]

@rleungx: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

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

Commit hash: 25668f9