Bump GraphQL.Client.Serializer.Newtonsoft from 6.0.0 to 6.1.0 in /Source

Bumps [GraphQL.Client.Serializer.Newtonsoft](https://github.com/graphql-dotnet/graphql-client) from 6.0.0 to 6.1.0.
- [Release notes](https://github.com/graphql-dotnet/graphql-client/releases)
- [Commits](graphql-dotnet/graphql-client@v6.0.0...v6.1.0)

---
updated-dependencies:
- dependency-name: GraphQL.Client.Serializer.Newtonsoft
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Source/DotNetGraphQL.Mobile/DotNetGraphQL.Mobile.csproj

@@ -12,7 +12,7 @@
         <PackageReference Include="modernhttpclient-updated" Version="3.4.3" />
         <PackageReference Include="GraphQL.Client" Version="6.0.0" />
         <PackageReference Include="Polly" Version="8.2.1" />
-        <PackageReference Include="GraphQL.Client.Serializer.Newtonsoft" Version="6.0.0" />
+        <PackageReference Include="GraphQL.Client.Serializer.Newtonsoft" Version="6.1.0" />
         <PackageReference Include="Xamarin.CommunityToolkit.Markup" Version="2.0.6" />
     </ItemGroup>
     <ItemGroup>