Merge pull request #577 from csharpfritz/dependabot/nuget/System.IO.Abstractions-21.2.1

Author: csharpfritz

Fritz.StreamTools/Fritz.StreamTools.csproj

@@ -33,7 +33,7 @@
 		<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="8.0.5" />
 		<PackageReference Include="Octokit" Version="0.50.0" />
 		<PackageReference Include="System.Formats.Asn1" Version="8.0.1" />
-		<PackageReference Include="System.IO.Abstractions" Version="21.0.29" />
+		<PackageReference Include="System.IO.Abstractions" Version="21.2.1" />
 		<PackageReference Include="System.Memory" Version="4.6.0" />
 		<PackageReference Include="System.Net.Security" Version="4.3.2" />
 		<PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />