Bump Newtonsoft.Json from 9.0.1 to 13.0.1 in /src/Api/PubnubApiUnity#9

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dependabot/nuget/src/Api/PubnubApiUnity/Newtonsoft.Json-13.0.1budgetpreneur/c-sharp:dependabot/nuget/src/Api/PubnubApiUnity/Newtonsoft.Json-13.0.1Copy head branch name to clipboard