backport: Update golangci lint (#679)

[lestrrat]

• Update linter and rules

• silence errors in test tools

• fix forcetypeassert linting problems

• appease linter

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (develop/v1@4899c32). Click here to learn what that means.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop/v1     #680   +/-   ##
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  Coverage              ?   72.88%           
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  Files                 ?       84           
  Lines                 ?     9578           
  Branches              ?        0           
=============================================
  Hits                  ?     6981           
  Misses                ?     1781           
  Partials              ?      816           

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