Bump Newtonsoft.Json from 12.0.3 to 13.0.1 in /ListDetail (#35)

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 12.0.3 to 13.0.1.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](https://github.com/JamesNK/Newtonsoft.Json/compare/12.0.3...13.0.1)

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

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ListDetail/ListDetail.csproj

@@ -95,7 +95,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json">
-      <Version>12.0.3</Version>
+      <Version>13.0.1</Version>
     </PackageReference>
     <PackageReference Include="Xamarin.AndroidX.AppCompat">
       <Version>1.3.1.4</Version>