fix(deps): update dependency @edx/frontend-platform to v8.3.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@edx/frontend-platform	8.3.3 -> 8.3.4

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Release Notes

openedx/frontend-platform (@​edx/frontend-platform)

v8.3.4

Compare Source

Bug Fixes

• allow to create the brand fallback urls when {} is defined in PARAGON_THEMES_URLS (#​785) (455c45e)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.09%. Comparing base (c18214d) to head (c001b0e).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1623   +/-   ##
=======================================
  Coverage   90.09%   90.09%           
=======================================
  Files         338      338           
  Lines        5784     5784           
  Branches     1370     1370           
=======================================
  Hits         5211     5211           
  Misses        557      557           
  Partials       16       16           

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