Update browserslist DB

[edx-requirements-bot]

Updated browserslist DB

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.83%. Comparing base (7233f08) to head (503511a).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1808   +/-   ##
=======================================
  Coverage   90.83%   90.83%           
=======================================
  Files         344      344           
  Lines        5794     5794           
  Branches     1333     1374   +41     
=======================================
  Hits         5263     5263           
+ Misses        514      512    -2     
- Partials       17       19    +2     

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