chore: fix goleak check

[mornyx]

Ignore github.com/ReneKroon/ttlcache/v2.(*Cache).startExpirationProcessing

[netlify]

✅ Deploy Preview for tidb-dashboard canceled.

Name	Link
🔨 Latest commit	fe8f8fc
🔍 Latest deploy log	https://app.netlify.com/sites/tidb-dashboard/deploys/65640744b1b566000836e87d

[codecov]

Codecov Report

Merging #1619 (fe8f8fc) into master (871aa0a) will increase coverage by 15.37%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1619       +/-   ##
===========================================
+ Coverage    9.23%   24.60%   +15.37%     
===========================================
  Files         123      169       +46     
  Lines       13007    15299     +2292     
===========================================
+ Hits         1201     3765     +2564     
+ Misses      11675    11251      -424     
- Partials      131      283      +152     

Flag	Coverage Δ
backend_integration	9.23% <ø> (ø)
backend_ut	26.43% <ø> (?)

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: baurine

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-27 03:10:20.868698522 +0000 UTC m=+805849.533924702: ☑️ agreed by baurine.