chore(deps): update dependency verify.nunit to 31.4.0

This MR contains the following updates:

Package	Change	Age	Confidence
Verify.NUnit	31.0.5 -> 31.4.0

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Release Notes

VerifyTests/Verify (Verify.NUnit)

v31.4.0

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v31.3.0

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v31.2.0

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v31.1.0

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