fix: update vhs-utils to correctly detect mp4 starting with moof/moov

[brandonocasey]

Description

Correctly detects mp4's that start with moof/moov instead of ftyp/styp.

[codecov]

Codecov Report

Merging #1173 (0ebc8a6) into main (8868569) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1173      +/-   ##
==========================================
+ Coverage   86.47%   86.51%   +0.04%     
==========================================
  Files          39       39              
  Lines        9577     9577              
  Branches     2210     2210              
==========================================
+ Hits         8282     8286       +4     
+ Misses       1295     1291       -4     

Impacted Files	Coverage Δ
src/source-updater.js	95.48% <0.00%> (+1.29%)	⬆️

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[brandonocasey]

Tests are failing in this pull request and main due to chrome v92 I will look into the failures and open another pull request.