Use the latest version of Hearth

[rikukissa]

Updates made in this PR: jembi/hearth#203 now merged into our forked version of Hearth.

I've run E2E tests locally and everything seems to be working still.

[codecov]

Codecov Report

Merging #3124 (f7fe549) into develop (339b9fe) will not change coverage.
The diff coverage is n/a.

❗ Current head f7fe549 differs from pull request most recent head 7782651. Consider uploading reports for the commit 7782651 to get more accurate results

@@           Coverage Diff            @@
##           develop    #3124   +/-   ##
========================================
  Coverage    79.75%   79.75%           
========================================
  Files          597      597           
  Lines        27714    27714           
  Branches      8897     8800   -97     
========================================
  Hits         22102    22102           
  Misses        5557     5557           
  Partials        55       55           

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