Avoid sinon import in exported lib files

[jmrossy]

Description

testUtils gets used by TestCoreDeployer which gets exported from the SDK, so we can't import sinon there. We should reorganize these test utils

[changeset-bot]

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Latest commit: e4bc803

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.28%. Comparing base (3528b28) to head (e4bc803).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3685   +/-   ##
=======================================
  Coverage   74.28%   74.28%           
=======================================
  Files         108      108           
  Lines        1217     1217           
  Branches      132      132           
=======================================
  Hits          904      904           
  Misses        297      297           
  Partials       16       16           

Components	Coverage Δ
core	84.61% <ø> (ø)
hooks	69.94% <ø> (ø)
isms	73.17% <ø> (ø)
token	63.77% <ø> (ø)
middlewares	77.48% <ø> (ø)