Add references for annotations

Analyzers/Directory.build.props

@@ -10,6 +10,10 @@
     <NoLogo>True</NoLogo>
     <DefineTrace>True</DefineTrace>
   </PropertyGroup>
+  <ItemGroup>
+      <PackageReference Update="JetBrains.Annotations" Version="2023.3.0" />
+      <PackageReference Update="JetBrains.ExternalAnnotations" Version="10.2.147" />
+  </ItemGroup>
   <ItemGroup>
       <Using Include="System.Buffers" />
       <Using Include="System.Collections.Specialized" />