chore(deps): bump Newtonsoft.Json from 12.0.3 to 13.0.1

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](JamesNK/Newtonsoft.Json@12.0.3...13.0.1)

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

Author: dependabot[bot]

src/Speedygeek.ZendeskAPI/Speedygeek.ZendeskAPI.csproj

@@ -18,7 +18,7 @@
 
   <ItemGroup>
     <PackageReference Include="GitVersionTask" Version="5.3.3" PrivateAssets="all" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="2.2.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="3.1.4" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="3.1.4" />