Fix deepsource: VET-V0008 Lock erroneously passed by value internal/db, backoff, circuitbreaker

[hlts2]

Description:

As titled.

the following are refactor targets.

• internal/backoff
• internal/circuitbreaker
• internal/db

Related Issue:

Versions:

• Go Version: 1.19.2
• Docker Version: 20.10.8
• Kubernetes Version: 1.22.0
• NGT Version: 1.14.8

Checklist:

• I have read the CONTRIBUTING document and completed our CLA agreement.
• I have checked open Pull Requests for the similar feature or fixes?

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[codecov]

Codecov Report

Base: 30.53% // Head: 30.54% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (e0a67e6) compared to base (9a2f9fd).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1859      +/-   ##
==========================================
+ Coverage   30.53%   30.54%   +0.01%     
==========================================
  Files         367      367              
  Lines       33828    33828              
==========================================
+ Hits        10328    10333       +5     
+ Misses      23085    23082       -3     
+ Partials      415      413       -2     

Impacted Files	Coverage Δ
internal/worker/queue.go	98.73% <0.00%> (-1.27%)	⬇️
internal/worker/worker.go	82.30% <0.00%> (-0.77%)	⬇️
internal/net/http/middleware/timeout.go	93.33% <0.00%> (+2.22%)	⬆️
...ent/core/ngt/service/vqueue/undeleted_index_map.go	71.58% <0.00%> (+3.27%)	⬆️

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[cloudflare-pages]

Deploying with    Cloudflare Pages

Latest commit:	e0a67e6
Status:	✅  Deploy successful!
Preview URL:	https://451dee0d.vald.pages.dev
Branch Preview URL:	https://refactor-vet-v008-lock-error.vald.pages.dev

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