Bump System.IO.Abstractions from 16.1.10 to 19.1.18 in /source/src/data-mapper#178

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dependabot/nuget/source/src/data-mapper/System.IO.Abstractions-19.1.18buhlergroup/data-mapper-dotnet:dependabot/nuget/source/src/data-mapper/System.IO.Abstractions-19.1.18Copy head branch name to clipboard