Update 1 NuGet dependencies

Author: github-actions[bot]

nanoFramework.WebServer.nuspec

@@ -24,7 +24,7 @@ Supports both HTTPS and HTTP.</description>
     <dependencies>
       <dependency id="nanoFramework.CoreLibrary" version="1.12.0-preview.1" />
       <dependency id="nanoFramework.Runtime.Events" version="1.10.0-preview.4" />
-      <dependency id="nanoFramework.System.Collections" version="1.3.0" />
+      <dependency id="nanoFramework.System.Collections" version="1.4.0-preview.7" />
       <dependency id="nanoFramework.System.Text" version="1.1.3-preview.4" />
       <dependency id="nanoFramework.System.Net" version="1.8.0-preview.15" />
       <dependency id="nanoFramework.System.Net.Http.Server" version="1.4.0-preview.6" />

nanoFramework.WebServer/nanoFramework.WebServer.nfproj

@@ -52,8 +52,8 @@
       <HintPath>..\packages\nanoFramework.Runtime.Events.1.10.0-preview.4\lib\nanoFramework.Runtime.Events.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="nanoFramework.System.Collections, Version=1.3.0.3, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Collections.1.3.0\lib\nanoFramework.System.Collections.dll</HintPath>
+    <Reference Include="nanoFramework.System.Collections, Version=1.4.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.System.Collections.1.4.0-preview.7\lib\nanoFramework.System.Collections.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.1.3.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">

nanoFramework.WebServer/packages.config

@@ -2,7 +2,7 @@
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.12.0-preview.1" targetFramework="netnanoframework10" />
   <package id="nanoFramework.Runtime.Events" version="1.10.0-preview.4" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Collections" version="1.3.0" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Collections" version="1.4.0-preview.7" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Net" version="1.8.0-preview.15" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Net.Http.Server" version="1.4.0-preview.6" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Text" version="1.1.3-preview.7" targetFramework="netnanoframework10" />