Make go:build compatible with go 1.16

[ThinkChaos]

#267 broke building on older go versions. This fixes it.
I also made sure it still builds with 1.17.

[codecov]

Codecov Report

Merging #361 (395888e) into development (3fa79b4) will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development     #361   +/-   ##
============================================
  Coverage        96.14%   96.14%           
============================================
  Files               30       30           
  Lines             2230     2230           
============================================
  Hits              2144     2144           
  Misses              56       56           
  Partials            30       30           

Impacted Files	Coverage Δ
server/server_config_trigger.go	100.00% <ø> (ø)

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[ThinkChaos]

Looks like an unrelated failure. Can you retry?

[0xERR0R]

Thanks for your work. I don't understand, why there is a problem with golangci-lint. I'll merge it