Merge pull request #200 from SchlenkR/dependabot/nuget/FSharp.SystemTextJson-1.3.13

Bump FSharp.SystemTextJson from 1.2.42 to 1.3.13

Author: SchlenkR

Diff for: src/Tests/Tests.fsproj

@@ -35,7 +35,7 @@
     <Compile Include="Misc.fs" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="FSharp.SystemTextJson" Version="1.2.42" />
+    <PackageReference Include="FSharp.SystemTextJson" Version="1.3.13" />
     <PackageReference Include="FsUnit" Version="5.6.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageReference Include="NUnit" Version="3.14.0" />