Bump Newtonsoft.Json from 12.0.3 to 13.0.2 in /OpenTok

Bumps [Newtonsoft.Json](https://github.com/JamesNK/Newtonsoft.Json) from 12.0.3 to 13.0.2.
- [Release notes](https://github.com/JamesNK/Newtonsoft.Json/releases)
- [Commits](JamesNK/Newtonsoft.Json@12.0.3...13.0.2)

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

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

Author: dependabot[bot]

OpenTok/OpenTok.csproj

@@ -28,19 +28,19 @@
   </PropertyGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'net452'">
     <PackageReference Include="JWT" Version="2.3.2" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' ==  'net46'">
     <PackageReference Include="JWT" Version="2.3.2" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="JWT" Version="7.2.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'net461'">
     <PackageReference Include="JWT" Version="7.2.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' != 'netstandard2.0' ">
     <Reference Include="System.Web" />