chore(deps): update dependency verify.nunit to 31.16.1

[devlead]

This PR contains the following updates:

Package	Type	Update	Change
verify.Nunit	nuget	minor	31.15.0 → 31.16.1

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Release Notes

VerifyTests/Verify (verify.Nunit)

v31.16.1

Compare Source

• #​1718 Handle eof and missing ihdr in png decoder

v31.16.0

Compare Source

• #​1704 Add ScrubNumericIds
• #​1707 Minor micro-optimizations for Verify project.
• #​1708 Add Target comparer and avoid string allocations.
• #​1709 ApplyForPropertyValue returns string instead of CharSpan
• #​1710 In-place sort instead of LINQ OrderByDescending
• #​1711 Remove unnecessary ToString() in VerifyJsonWriter
• #​1716 add Png ssim comparer
• #​1717 Throw on null assembly in TryGetType for bad plugin assembly

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