chore(deps): update dependency @types/sinon to v21

[cu-infra-svc-git]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@types/sinon (source)	^17.0.4 -> ^21.0.0

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.63%. Comparing base (1e8e664) to head (d15cb34).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #135   +/-   ##
=======================================
  Coverage   96.63%   96.63%           
=======================================
  Files           6        6           
  Lines        1843     1843           
  Branches      184      184           
=======================================
  Hits         1781     1781           
  Misses         62       62           

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