upgrade golangci-lint to v1.63.4

[cfryanr]

Release note:

NONE

[netlify]

✅ Deploy Preview for pinniped-dev canceled.

Name	Link
🔨 Latest commit	4872be0
🔍 Latest deploy log	https://app.netlify.com/sites/pinniped-dev/deploys/677c4570b137500008040b5a

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 31.95%. Comparing base (691307a) to head (4872be0).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2175   +/-   ##
=======================================
  Coverage   31.94%   31.95%           
=======================================
  Files         379      379           
  Lines       62098    62098           
=======================================
+ Hits        19840    19842    +2     
+ Misses      41728    41726    -2     
  Partials      530      530           

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