chore(ci): run tests for more recent Go versions

[mdelapenya]

What does this PR do?

It adds Go 1.16 and 1.17 to the CI matrix to run the tests

Why is it important?

Go versions coverage

Other concerns

Should we retire 1.14 (or any other) from the matrix? Which versions should we be compatible with?

[codecov]

Codecov Report

Merging #401 (d74b3a3) into master (8b163de) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #401   +/-   ##
=======================================
  Coverage   64.16%   64.16%           
=======================================
  Files          18       18           
  Lines        1108     1108           
=======================================
  Hits          711      711           
- Misses        293      294    +1     
+ Partials      104      103    -1     

Impacted Files	Coverage Δ
docker.go	64.20% <0.00%> (-0.40%)	⬇️
wait/http.go	61.45% <0.00%> (+2.08%)	⬆️

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[gianarb]

Thanks a lot