chore(deps): update dependency sinon to v15.0.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sinon (source)	15.0.3 -> 15.0.4

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Release Notes

sinonjs/sinon

v15.0.4

Compare Source

• e9042c4f
  Handling non-configurable object descriptors on the prototype (#​2508) (Carl-Erik Kopseng)

  This should essentially make decorated methods stubbable again (see #​2491)

• 430c9a60
  Remove uses of var (#​2506) (Carl-Erik Kopseng)

  Replace var with const where possible in /lib and /test.

  Modified the let codemod to be a codemod.

  Took about half an hour with --watch running

Released by Carl-Erik Kopseng on 2023-04-20.

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