Updated to final Cofoundry 0.7 release package

Author: Joel Mitchell

src/Cofoundry.Plugins.Mail.MailKit/Cofoundry.Plugins.Mail.MailKit.csproj

@@ -16,7 +16,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Cofoundry.Core" Version="0.6.2-feaure-360-netc-0028" />
+    <PackageReference Include="Cofoundry.Core" Version="0.7.0" />
     <PackageReference Include="MailKit" Version="2.1.2" />
   </ItemGroup>