Bump sinon from 16.1.3 to 20.0.0 #741

Job	Run time
General checks, tests and coverage reporting	22s
Unit tests on Node.js 20 and ubuntu-latest	7s
Unit tests on Node.js 20 and windows-latest	45s
Unit tests on Node.js 20 and macOS-latest	11s
Unit tests on Node.js 22 and ubuntu-latest	8s
Unit tests on Node.js 22 and windows-latest	1m 8s
Unit tests on Node.js 22 and macOS-latest	11s
	2m 52s

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