Bump golang.org/x/net to 0.37.0

[seanlaii]

What type of PR is this?
/kind cleanup

What this PR does / why we need it:
Bump golang.org/x/net to 0.37.0 to address security concerns: #6212 (comment).

Which issue(s) this PR fixes:
Part of #3941

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Bump golang.org/x/net to 0.37.0.

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.90%. Comparing base (0235dc6) to head (e44362a).

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6225   +/-   ##
=======================================
  Coverage   47.90%   47.90%           
=======================================
  Files         676      676           
  Lines       55962    55962           
=======================================
+ Hits        26809    26810    +1     
+ Misses      27405    27404    -1     
  Partials     1748     1748           

Flag	Coverage Δ
unittests	47.90% <ø> (+<0.01%)	⬆️

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[RainbowMango]

/lgtm
/approve

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