Update 2 NuGet dependencies

Author: github-actions[bot]

nanoFramework.SignalR.Client.nuspec

@@ -20,11 +20,11 @@
     <tags>nanoFramework C# csharp netmf netnf nanoFramework.SignalR.Client</tags>
     <dependencies>
       <dependency id="nanoFramework.CoreLibrary" version="1.12.0-preview.5" />
-      <dependency id="nanoFramework.Json" version="2.1.2-preview.37" />
+      <dependency id="nanoFramework.Json" version="2.1.2-preview.39" />
       <dependency id="nanoFramework.Runtime.Events" version="1.10.0-preview.6" />
       <dependency id="nanoFramework.System.Collections" version="1.4.0-preview.7" />
       <dependency id="nanoFramework.System.Net" version="1.8.0-preview.26" />
-      <dependency id="nanoFramework.System.Net.WebSockets.Client" version="1.0.0-preview.74" />
+      <dependency id="nanoFramework.System.Net.WebSockets.Client" version="1.0.0-preview.75" />
       <dependency id="nanoFramework.System.Text" version="1.1.3-preview.7" />
       <dependency id="nanoFramework.System.Threading" version="1.0.4-preview.8" />
       <dependency id="nanoFramework.Windows.Storage.Streams" version="1.12.4-preview.14" />

nanoFramework.SignalR.Client/nanoFramework.SignalR.Client.nfproj

@@ -48,7 +48,7 @@
       <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.37\lib\nanoFramework.Json.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.Json.2.1.2-preview.39\lib\nanoFramework.Json.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Events, Version=1.10.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
@@ -68,7 +68,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.WebSockets, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Net.WebSockets.Client.1.0.0-preview.74\lib\System.Net.WebSockets.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Net.WebSockets.Client.1.0.0-preview.75\lib\System.Net.WebSockets.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Threading, Version=1.0.4.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">

nanoFramework.SignalR.Client/packages.config

@@ -1,11 +1,11 @@
 <?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.37" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.Json" version="2.1.2-preview.39" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Events" version="1.10.0-preview.6" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Collections" version="1.4.0-preview.14" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Net" version="1.8.0-preview.26" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Net.WebSockets.Client" version="1.0.0-preview.74" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Net.WebSockets.Client" version="1.0.0-preview.75" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Text" version="1.1.3-preview.13" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Threading" version="1.0.4-preview.14" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Windows.Storage.Streams" version="1.12.4-preview.14" targetFramework="netnanoframework10" />