Add PrivateAssets="all" to all development dependencies in Directory.Packages.props

Author: romerod

projects/Directory.Packages.props

@@ -40,8 +40,8 @@
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
   </ItemGroup>
   <ItemGroup Condition="'$(IsPackable)'=='true'">
-    <GlobalPackageReference Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="3.3.4" />
-    <GlobalPackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
+    <GlobalPackageReference Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="3.3.4" PrivateAssets="all" />
+    <GlobalPackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="all" />
     <GlobalPackageReference Include="MinVer" Version="6.0.0" PrivateAssets="all" />
   </ItemGroup>
 </Project>