replace hyper-socks2 with hyper-util client-proxy feature

[tottoto]

Motivation

hyper-util provides client-proxy feature.

Solution

Uses hyper-util client-proxy feature.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 75.1%. Comparing base (6590ea9) to head (92a2ac0).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
kube-client/src/client/builder.rs	0.0%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1795     +/-   ##
=======================================
- Coverage   75.2%   75.1%   -0.0%     
=======================================
  Files         84      84             
  Lines       7791    7791             
=======================================
- Hits        5853    5850      -3     
- Misses      1938    1941      +3     

Files with missing lines	Coverage Δ
kube-client/src/client/builder.rs	64.3% <0.0%> (ø)

... and 3 files with indirect coverage changes

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[clux]

Thank you. More trustworthy dependencies.

Did a quick local test with a local socks5 proxy over ssh and it worked as before.