Bump Newtonsoft.Json from 10.0.3 to 13.0.1 in /Forms/Diagram/Diagram.iOS

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 10.0.3 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@10.0.3...13.0.1)

---
updated-dependencies:
- dependency-name: Newtonsoft.Json
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Forms/Diagram/Diagram.iOS/SampleBrowser.SfDiagram.iOS.csproj

@@ -126,7 +126,7 @@
     <Reference Include="Xamarin.iOS" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="Syncfusion.Xamarin.Core">
       <Version>20.1.0.55</Version>
     </PackageReference>

Forms/Diagram/Diagram/SampleBrowser.SfDiagram.csproj

@@ -14,7 +14,7 @@
  </ItemGroup>
   <ItemGroup>
     <None Remove="SampleBrowser.SfDiagram.props" />
-	<PackageReference Include="Newtonsoft.Json" Version="10.0.3" /> 
+	<PackageReference Include="Newtonsoft.Json" Version="13.0.1" /> 
     <PackageReference Include="SampleBrowser.Core">
       <Version>20.1.0.55</Version>
     </PackageReference>