Update 1 nuget dependencies

Author: github-actions[bot]

nanoFramework.System.Net.DELIVERABLES.nuspec

@@ -19,7 +19,7 @@
     <tags>
     </tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="1.10.3-preview.7" />
+      <dependency id="nanoFramework.CoreLibrary" version="1.10.3-preview.20" />
       <dependency id="nanoFramework.Runtime.Events" version="1.9.0-preview.16" />
     </dependencies>
   </metadata>

nanoFramework.System.Net.nuspec

@@ -19,7 +19,7 @@
 This package requires a target with nanoFramework.System.Net v$nativeVersion$ (checksum $checksum$).</description>
     <tags>nanoFramework C# csharp netmf netnf nanoFramework.System.Net</tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="1.10.3-preview.7" />
+      <dependency id="nanoFramework.CoreLibrary" version="1.10.3-preview.20" />
       <dependency id="nanoFramework.Runtime.Events" version="1.9.0-preview.16" />
       <dependency id="nanoFramework.System.Text" version="1.1.1-preview.40" />
     </dependencies>

nanoFramework.System.Net/System.Net.nfproj

@@ -79,7 +79,7 @@
     </NFMDP_PE_ExcludeClassByName>
   </ItemGroup>
   <ItemGroup>
-    <NFMDP_PE_LoadHints Include="..\packages\nanoFramework.CoreLibrary.1.10.3-preview.7\lib\mscorlib.dll">
+    <NFMDP_PE_LoadHints Include="..\packages\nanoFramework.CoreLibrary.1.10.3-preview.20\lib\mscorlib.dll">
       <InProject>false</InProject>
     </NFMDP_PE_LoadHints>
     <NFMDP_PE_LoadHints Include="..\packages\nanoFramework.Runtime.Events.1.9.0-preview.16\lib\nanoFramework.Runtime.Events.dll">
@@ -139,7 +139,7 @@
   </ItemGroup>
   <ItemGroup>
     <Reference Include="mscorlib, Version=1.10.3.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.1.10.3-preview.7\lib\mscorlib.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.CoreLibrary.1.10.3-preview.20\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Events, Version=1.9.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">

nanoFramework.System.Net/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.10.3-preview.7" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.CoreLibrary" version="1.10.3-preview.20" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Events" version="1.9.0-preview.16" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Text" version="1.1.1-preview.40" targetFramework="netnanoframework10" />
   <package id="Nerdbank.GitVersioning" version="3.1.91" developmentDependency="true" targetFramework="netnanoframework10" />