(maint) Update dependency Cake.Testing to v4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Cake.Testing (source)	3.2.0 -> 4.0.0

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Release Notes

cake-build/cake (Cake.Testing)

v4.0.0

• 4266 Update LatestPotentialBreakingChange to 4.0.0.
• 4132 Add File APIs for setting timestamps (creation time, last write time, last access time).
• 4250 Update System.Collections.Immutable to 8.0.0.
• 4260 Unzip alias should support overwrite files.
• 4251 Update System.Reflection.Metadata 8.0.0.
• 4249 Update Microsoft.Extensions.DependencyInjection to 8.0.0.
• 4197 Execution of Cake script fails if an addin defines an alias that uses nullable reference types in its signature.
• 4150 Cake script is contributing unactionable diagnostics in VS Code Problems pane.

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Configuration

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (81fddf4) 100.00% compared to head (5b61782) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop      #239   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files            4         4           
  Lines          154       154           
  Branches        31        31           
=========================================
  Hits           154       154           

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[nils-a]

Superseded by #243

[renovate]

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