Update dependency Newtonsoft.Json to v12.0.3 (v9/contrib) - autoclosed

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This PR contains the following updates:

Package	Type	Update	Change
Newtonsoft.Json (source)	nuget	patch	12.0.1 -> 12.0.3

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Release Notes

JamesNK/Newtonsoft.Json

### [`v12.0.3`](https://togithub.com/JamesNK/Newtonsoft.Json/releases/tag/12.0.3) [Compare Source](https://togithub.com/JamesNK/Newtonsoft.Json/compare/12.0.2...12.0.3) - New feature - Added support for nullable reference types - New feature - Added KebabCaseNamingStrategy - Change - Package now uses embedded package icon - Fix - Fixed bug when merging JToken with itself - Fix - Fixed performance of calling ICustomTypeDescriptor.GetProperties - Fix - Fixed serializing Enumerable.Empty and empty arrays on .NET Core 3.0 - Fix - Fixed deserializing some collection types with constructor - Fix - Fixed deserializing IImmutableSet to ImmutableHashSet instead of ImmutableSortedSet - Fix - Fixed deserializing IImmutableDictionary to ImmutableDictionary instead of ImmutableSortedDictionary - Fix - Fixed deserializing into constructors with more than 256 parameters - Fix - Fixed hang when deserializing JTokenReader with preceding comment - Fix - Fixed JSONPath scanning with nested indexer - Fix - Fixed deserializing incomplete JSON object to JObject - Fix - Fixed using StringEnumConverter with naming strategy and specified values ### [`v12.0.2`](https://togithub.com/JamesNK/Newtonsoft.Json/releases/tag/12.0.2) [Compare Source](https://togithub.com/JamesNK/Newtonsoft.Json/compare/12.0.1...12.0.2) - New feature - Added MissingMemberHandling to JsonObjectAttribute and JsonObjectContract - New feature - Added constructor to JTokenReader to specify initial path - New feature - Added JsonProperty.IsRequiredSpecified - New feature - Added JsonContract.InternalConverter - Change - Moved embedded debug symbols in NuGet package to a symbol package on NuGet.org - Fix - Fixed deserializing nullable struct collections - Fix - Fixed memory link when serializing enums to named values - Fix - Fixed error when setting JsonLoadSettings.DuplicatePropertyNameHandling to Replace

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Configuration

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