Drop support for go v1.17.x

[sdghchj]

Describe the PR
Remove go version v1.17.x

Relation issue
#1715
#1722

[sdghchj]

@ubogdan Do you know how to fix it ?
I wonder why it gets the latest go-openapi/spec version while v.0.20.4 is declared in go.mod？
I find it uses go get to upgrade deps in Makefile, why not use go mod tidy?

[ubogdan]

Well, I guess the "deps" target from the Makefile is not needed anymore. Also, we use GOPATH in the workflow named ci.yaml (which is not necessary anymore).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (6cdaaf5) 83.52% compared to head (9d71a87) 83.39%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1723      +/-   ##
==========================================
- Coverage   83.52%   83.39%   -0.14%     
==========================================
  Files          19       16       -3     
  Lines        3823     3781      -42     
==========================================
- Hits         3193     3153      -40     
+ Misses        534      532       -2     
  Partials       96       96              

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[sdghchj]

Well, I guess the "deps" target from the Makefile is not needed anymore. Also, we use GOPATH in the workflow named ci.yaml (which is not necessary anymore).

OK.
I have fixed it with go mod tidy.