Add Carter 9 to Newtonsoft package

Author: jchannon

src/Carter.ResponseNegotiators.Newtonsoft/Carter.ResponseNegotiators.Newtonsoft.csproj

@@ -20,7 +20,7 @@
 
     <ItemGroup>
         <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-        <PackageReference Include="Carter" Version="8.0.0" />
+        <PackageReference Include="Carter" Version="9.0.0" />
         <PackageReference Include="MinVer" Version="6.0.0">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>