chore(deps): update dependency sinon to v20

This MR contains the following updates:

Package	Type	Update	Change
sinon (source)	devDependencies	major	^19.0.4 -> ^20.0.0

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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Release Notes

sinonjs/sinon (sinon)

v20.0.0

Compare Source

• b6daed26 chore!: remove usingPromise (Morgan Roderick)

  Everyone should be using native promises by now, or should know how to stub natives

• 95d4b8fc chore!: remove fakeXMLHttpRequest and fakeServer (Morgan Roderick)

  BREAKING CHANGE: remove fakeXMLHttpRequest and fakeServer from the API

Released by Morgan Roderick on 2025-03-24.

v19.0.5

Compare Source

• 67d19ff0 chore: deprecate usingPromise (#​2651) (Morgan Roderick)
• 598dddb6 chore: deprecate useFakeXMLHttpRequest and useFakeServer (Morgan Roderick)

Released by Morgan Roderick on 2025-03-23.

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