Bump Verify.Xunit from 26.1.5 to 26.1.6 (#37)

Author: dependabot[bot]

Diff for: build/targets/tests/Packages.props

@@ -4,7 +4,7 @@
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="1.1.2-beta1.24314.1" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
     <PackageVersion Include="Verify.Nupkg" Version="1.1.6" />
-    <PackageVersion Include="Verify.Xunit" Version="26.1.5" />
+    <PackageVersion Include="Verify.Xunit" Version="26.1.6" />
     <PackageVersion Include="xunit" Version="2.9.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" />
     <PackageVersion Include="Meziantou.Xunit.ParallelTestFramework" Version="2.3.0" />