Upgrade golangci-lint, more linters

[JoeTurki]

Description

Introduces new linters, upgrade golangci-lint to version (v1.63.4)

Reference issue

pion/.goassets#220

[codecov]

Codecov Report

Attention: Patch coverage is 44.69697% with 73 lines in your changes missing coverage. Please review.

Project coverage is 62.55%. Comparing base (befed39) to head (aa7d4d1).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
conn.go	44.69%	71 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #215      +/-   ##
==========================================
- Coverage   66.46%   62.55%   -3.92%     
==========================================
  Files           1        1              
  Lines         841      916      +75     
==========================================
+ Hits          559      573      +14     
- Misses        206      265      +59     
- Partials       76       78       +2     

Flag	Coverage Δ
go	62.55% <44.69%> (-3.92%)	⬇️
wasm	0.00% <0.00%> (ø)

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