fix deepsource: Audit required: Insecure gRPC server

[datelier]

Description:

Ignore this rule.

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?

Special notes for your reviewer:

[vdaas-ci]

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[kpango]

LGTM

[codecov]

Codecov Report

Base: 30.55% // Head: 30.54% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (1f8084c) compared to base (63e6fcd).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1833      +/-   ##
==========================================
- Coverage   30.55%   30.54%   -0.01%     
==========================================
  Files         367      367              
  Lines       33777    33778       +1     
==========================================
- Hits        10320    10317       -3     
- Misses      23043    23046       +3     
- Partials      414      415       +1     

Impacted Files	Coverage Δ
internal/net/grpc/server.go	100.00% <100.00%> (ø)
...ent/core/ngt/service/vqueue/undeleted_index_map.go	71.11% <0.00%> (-5.56%)	⬇️
internal/worker/worker.go	83.84% <0.00%> (+1.53%)	⬆️
...nt/core/ngt/service/vqueue/uninserted_index_map.go	70.49% <0.00%> (+2.18%)	⬆️

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[cloudflare-workers-and-pages]

Deploying with    Cloudflare Pages

Latest commit:	bec2ca6
Status:	⚡️  Build in progress...

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[hlts2]

LGTM