Update dependency Microsoft.NET.Test.Sdk to v18

Author: renovate[bot]

System.IO.Abstractions.Analyzers.Tests/System.IO.Abstractions.Analyzers.Tests.csproj

@@ -7,7 +7,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1"/>
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0"/>
 		<PackageReference Include="System.IO.Abstractions" Version="22.0.16"/>
 		<PackageReference Include="xunit" Version="2.9.3"/>
 		<PackageReference Include="xunit.runner.visualstudio" Version="3.1.4">