Update 2 NuGet dependencies

Author: github-actions[bot]

nanoFramework.WebServer.nuspec

@@ -23,10 +23,10 @@ Supports both HTTPS and HTTP.</description>
     <dependencies>
       <dependency id="nanoFramework.CoreLibrary" version="1.12.0-preview.9" />
       <dependency id="nanoFramework.Runtime.Events" version="1.10.0-preview.8" />
-      <dependency id="nanoFramework.System.Collections" version="1.4.0-preview.16" />
+      <dependency id="nanoFramework.System.Collections" version="1.4.0-preview.21" />
       <dependency id="nanoFramework.System.Text" version="1.1.3-preview.4" />
       <dependency id="nanoFramework.System.Net" version="1.8.0-preview.29" />
-      <dependency id="nanoFramework.System.Net.Http.Server" version="1.4.0-preview.35" />
+      <dependency id="nanoFramework.System.Net.Http.Server" version="1.4.0-preview.36" />
       <dependency id="nanoFramework.Windows.Storage" version="1.4.6-preview.29" />
       <dependency id="nanoFramework.Windows.Storage.Streams" version="1.12.4-preview.14" />
       <dependency id="nanoFramework.System.Threading" version="1.0.4-preview.6" />

nanoFramework.WebServer/nanoFramework.WebServer.nfproj

@@ -53,7 +53,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Collections, Version=1.4.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Collections.1.4.0-preview.16\lib\nanoFramework.System.Collections.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Collections.1.4.0-preview.21\lib\nanoFramework.System.Collections.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.1.3.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
@@ -69,7 +69,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http, Version=1.4.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Net.Http.Server.1.4.0-preview.35\lib\System.Net.Http.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Net.Http.Server.1.4.0-preview.36\lib\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Threading, Version=1.0.4.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">

nanoFramework.WebServer/packages.config

@@ -2,10 +2,10 @@
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.12.0-preview.9" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Events" version="1.10.0-preview.8" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Collections" version="1.4.0-preview.16" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Collections" version="1.4.0-preview.21" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.IO.Streams" version="1.0.0-preview.12" />
   <package id="nanoFramework.System.Net" version="1.8.0-preview.29" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Net.Http.Server" version="1.4.0-preview.35" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Net.Http.Server" version="1.4.0-preview.36" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Text" version="1.1.3-preview.15" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Threading" version="1.0.4-preview.16" />
   <package id="nanoFramework.Windows.Storage" version="1.4.6-preview.29" targetFramework="netnanoframework10" />