Updated Visual Studio validation attributes to major release

This is a build-only dependency and won't impact any downstream consumers. (Technically, the attributes in this library are exposed on public attributes, but knowledge of those attributes isn't necessary for consuming libraries; they instead impact how the decorated parameters are interpreted by code analysis.)

Author: JeremyCaney

OnTopic/OnTopic.csproj

@@ -27,7 +27,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="System.ComponentModel.Annotations" Version="4.7.0" />
-    <PackageReference Include="Microsoft.VisualStudio.Validation" Version="16.9.32">
+    <PackageReference Include="Microsoft.VisualStudio.Validation" Version="17.0.34">
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
   </ItemGroup>