Update browserslist DB

[edx-requirements-bot]

Updated browserslist DB

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.14%. Comparing base (7ddc950) to head (3a1bb8a).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #258   +/-   ##
=======================================
  Coverage   84.14%   84.14%           
=======================================
  Files          47       47           
  Lines         700      700           
  Branches      135      135           
=======================================
  Hits          589      589           
  Misses        111      111           

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