SponsorLink should be linked as private assets

Author: kzu

src/CodeAnalysis/CodeAnalysis.csproj

@@ -10,7 +10,7 @@
     <PackageReference Include="NuGetizer" Version="1.0.1" PrivateAssets="all" PackTransitive="false" />
     <PackageReference Include="ThisAssembly.AssemblyInfo" Version="1.2.12" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" Pack="false" />
-    <PackageReference Include="Devlooped.SponsorLink" Version="0.10.3" />
+    <PackageReference Include="Devlooped.SponsorLink" Version="0.10.3" PrivateAssets="all" />
   </ItemGroup>
 
 </Project>