Use go-json parser for http responses

[davidpst]

Implements JSON decoder using go-json for http response (#3247)

I have added a test comparing the two versions:

encoding/json
BenchmarkUnmarshalJson-10 415700 2792 ns/op 1176 B/op 7 allocs/op

goccy/go-json
BenchmarkUnmarshalJson-10 7477863 139.9 ns/op 912 B/op 2 allocs/op

[codecov-commenter]

Codecov Report

Merging #3248 (3791e95) into master (9598ef5) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

❗ Current head 3791e95 differs from pull request most recent head 0cb02b1. Consider uploading reports for the commit 0cb02b1 to get more accurate results

@@            Coverage Diff             @@
##           master    #3248      +/-   ##
==========================================
- Coverage   73.21%   73.17%   -0.05%     
==========================================
  Files         258      256       -2     
  Lines       19884    19880       -4     
==========================================
- Hits        14559    14547      -12     
- Misses       4402     4405       +3     
- Partials      923      928       +5     

Flag	Coverage Δ
ubuntu	73.17% <100.00%> (+0.02%)	⬆️
windows	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
js/modules/k6/http/response.go	80.00% <100.00%> (+0.14%)	⬆️

... and 8 files with indirect coverage changes

[oleiade]

Hey @davidpst, as mentioned in the linked issue, we would rather not merge this at the moment, for the reasons mentioned there. If that's okay with you, I would close this PR 👍🏻