fix(deps): update dependency @edx/browserslist-config to v1.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@edx/browserslist-config	1.2.0 -> 1.4.0

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Release Notes

edx/browserslist-config (@​edx/browserslist-config)

v1.4.0

Compare Source

v1.3.0

Compare Source

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Configuration

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.86%. Comparing base (1d154f4) to head (c78f96f).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1570   +/-   ##
=======================================
  Coverage   89.86%   89.86%           
=======================================
  Files         326      326           
  Lines        5614     5614           
  Branches     1398     1398           
=======================================
  Hits         5045     5045           
- Misses        553      554    +1     
+ Partials       16       15    -1     

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