Updates to latest browser

[inancgumus]

What?

• Fix potential races in createWaitForEvent*
• Desobekify Browser
• Updates to k6 master

Why?

To prevent potential race conditions.

Checklist

• I have performed a self-review of my code.
• I have added tests for my changes.
• I have run linter locally (make lint) and all checks pass.
• I have run tests locally (make tests) and all tests pass.
• I have commented on my code, particularly in hard-to-understand areas.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.94%. Comparing base (95b1a5a) to head (a36569a).

❗ Current head a36569a differs from pull request most recent head 51c5553

Please upload reports for the commit 51c5553 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3819      +/-   ##
==========================================
+ Coverage   71.92%   71.94%   +0.02%     
==========================================
  Files         291      291              
  Lines       21277    21277              
==========================================
+ Hits        15303    15308       +5     
+ Misses       4915     4911       -4     
+ Partials     1059     1058       -1     

Flag	Coverage Δ
ubuntu	71.88% <ø> (+0.02%)	⬆️
windows	71.78% <ø> (+<0.01%)	⬆️

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