Update browserslist DB

[edx-requirements-bot]

Updated browserslist DB

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.51%. Comparing base (df79861) to head (502f88d).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #2943    +/-   ##
========================================
  Coverage   95.51%   95.51%            
========================================
  Files        1329     1329            
  Lines       30557    30557            
  Branches     6713     6947   +234     
========================================
  Hits        29186    29186            
+ Misses       1315     1303    -12     
- Partials       56       68    +12     

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