Adjust data source package references

Author: Martin-Molinero

QuantConnect.DataSource.csproj

@@ -8,9 +8,8 @@
     <DocumentationFile>$(OutputPath)\QuantConnect.DataSource.RegalyticsArticles.xml</DocumentationFile>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="QuantConnect.Common" Version="2.5.11800" />
+    <PackageReference Include="QuantConnect.Common" Version="2.5.*" />
     <PackageReference Include="protobuf-net" Version="3.0.29" />
-    <PackageReference Include="protobuf-net.Core" Version="3.0.29" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
   </ItemGroup>