Update 1 NuGet dependencies

Author: github-actions[bot]

nanoFramework.Azure.Devices.Client.nuspec

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <package xmlns="http://schemas.microsoft.com/packaging/2012/06/nuspec.xsd">
   <metadata>
     <id>nanoFramework.Azure.Devices.Client</id>
@@ -21,7 +21,7 @@ This is an SDK for Azure IoT Hub using MQTT broker.</description>
     <tags>nanoFramework C# csharp netmf netnf Microsoft.Azure.Devices nanoFramework.Azure.Devices</tags>
     <dependencies>
       <dependency id="nanoFramework.CoreLibrary" version="1.12.0-preview.5" />
-      <dependency id="nanoFramework.Json" version="2.1.2-preview.29" />
+      <dependency id="nanoFramework.Json" version="2.1.2-preview.31" />
       <dependency id="nanoFramework.M2Mqtt" version="5.0.2-preview.72" />
       <dependency id="nanoFramework.Runtime.Events" version="1.10.0-preview.6" />
       <dependency id="nanoFramework.Runtime.Native" version="1.5.4-preview.3" />

nanoFramework.Azure.Devices.Client/Azure.Devices.Client.nfproj

@@ -61,7 +61,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.Json, Version=2.1.2.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.Json.2.1.2-preview.29\lib\nanoFramework.Json.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.Json.2.1.2-preview.31\lib\nanoFramework.Json.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.M2Mqtt, Version=5.0.2.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">

nanoFramework.Azure.Devices.Client/packages.config

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.12.0-preview.5" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.Json" version="2.1.2-preview.29" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.Json" version="2.1.2-preview.31" targetFramework="netnanoframework10" />
   <package id="nanoFramework.M2Mqtt" version="5.0.2-preview.72" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Events" version="1.10.0-preview.6" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Native" version="1.5.4-preview.3" targetFramework="netnanoframework10" />