bump NUnit.Analyzers up to 4.11.2

Author: smdn

tests/Directory.Build.targets

@@ -6,7 +6,7 @@ SPDX-License-Identifier: MIT
   <Import Project="$(MSBuildThisFileDirectory)TestReleasedPackage.targets" Condition=" '$(IsTestProject)' == 'true' " />
 
   <ItemGroup>
-    <PackageReference Update="NUnit.Analyzers" Version="4.9.1"/>
+    <PackageReference Update="NUnit.Analyzers" Version="4.11.2"/>
   </ItemGroup>
 
   <Import Project="Sdk.targets" Sdk="Smdn.MSBuild.ProjectAssets.Common" />