Bump Newtonsoft.Json from 12.0.3 to 13.0.2 in /dotnet/DynamoDB/AddItems#56

dependabot[bot] wants to merge 1 commit intomasterDoug-AWS/code-examples:masterfrom

dependabot/nuget/dotnet/DynamoDB/AddItems/Newtonsoft.Json-13.0.2Doug-AWS/code-examples:dependabot/nuget/dotnet/DynamoDB/AddItems/Newtonsoft.Json-13.0.2Copy head branch name to clipboard