Bump k6 version to v0.46

[oleiade]

What?

This PR bumps the k6 binary version to version v0.46, as per the release checklist.

Related PR(s)/Issue(s)

#3138
#3246

[codecov-commenter]

Codecov Report

Merging #3266 (afca555) into master (8fa0e6b) will increase coverage by 0.01%.
The diff coverage is n/a.

❗ Current head afca555 differs from pull request most recent head f04b6a3. Consider uploading reports for the commit f04b6a3 to get more accurate results

@@            Coverage Diff             @@
##           master    #3266      +/-   ##
==========================================
+ Coverage   73.21%   73.22%   +0.01%     
==========================================
  Files         258      258              
  Lines       19884    19884              
==========================================
+ Hits        14559    14561       +2     
+ Misses       4402     4400       -2     
  Partials      923      923              

Flag	Coverage Δ
ubuntu	73.16% <ø> (+0.01%)	⬆️
windows	73.06% <ø> (+<0.01%)	⬆️

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

Files Changed	Coverage Δ
lib/consts/consts.go	78.57% <ø> (ø)

... and 1 file with indirect coverage changes