bump test related packages

Author: smdn

tests/Directory.Build.props

@@ -16,9 +16,9 @@ SPDX-License-Identifier: MIT
   </PropertyGroup>
 
   <ItemGroup Condition=" '$(IsTestProject)' == 'true' ">
-    <PackageReference Include="NUnit" Version="4.3.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="5.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1"/>
+    <PackageReference Include="NUnit" Version="4.4.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1"/>
   </ItemGroup>
 
   <ItemGroup>