Bump System.IO.Abstractions.TestingHelpers from 21.3.1 to 22.0.16#53

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dependabot/nuget/src/BicepButton/System.IO.Abstractions.TestingHelpers-22.0.16anthony-c-martin/bicep-button:dependabot/nuget/src/BicepButton/System.IO.Abstractions.TestingHelpers-22.0.16Copy head branch name to clipboard