Disable CA1707 for tests

Author: JimBobSquarePants

sixlabors.tests.ruleset

@@ -7,6 +7,9 @@
   <Rules AnalyzerId="Microsoft.CodeAnalysis.CSharp.Features" RuleNamespace="Microsoft.CodeAnalysis.CSharp.Features">
     <Rule Id="IDE0058" Action="None" />
   </Rules>
+  <Rules AnalyzerId="Microsoft.CodeAnalysis.NetAnalyzers" RuleNamespace="Microsoft.CodeAnalysis.NetAnalyzers">
+    <Rule Id="CA1707" Action="None" />
+  </Rules>
   <Rules AnalyzerId="Microsoft.CodeAnalysis.VisualBasic.Features" RuleNamespace="Microsoft.CodeAnalysis.VisualBasic.Features">
     <Rule Id="IDE0058" Action="None" />
   </Rules>