test: Add Node 20 to CI matrix

[BilalQamar95]

Description

As a first step in the upgrade to Node 20, add it to the CI matrix as a non-blocking test.

See the tracking issue for further information.

[MaxFrank13]

Looks like some snapshots are failing in CI. Otherwise, this looks good. Thanks for putting this together

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.78%. Comparing base (b27300e) to head (f73df41).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1069   +/-   ##
=======================================
  Coverage   66.78%   66.78%           
=======================================
  Files          51       51           
  Lines         849      849           
  Branches      176      173    -3     
=======================================
  Hits          567      567           
  Misses        272      272           
  Partials       10       10           

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