Update 1 NuGet dependencies

Author: github-actions[bot]

WebSockets.Server/System.Net.WebSockets.Server.nfproj

@@ -118,7 +118,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http, Version=1.4.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Net.Http.1.4.0-preview.13\lib\System.Net.Http.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Net.Http.1.4.0-preview.15\lib\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Threading, Version=1.0.4.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">

WebSockets.Server/packages.config

@@ -4,7 +4,7 @@
   <package id="nanoFramework.Runtime.Events" version="1.10.0-preview.6" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Collections" version="1.4.0-preview.9" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Net" version="1.8.0-preview.17" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Net.Http" version="1.4.0-preview.13" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Net.Http" version="1.4.0-preview.15" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Text" version="1.1.3-preview.9" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Threading" version="1.0.4-preview.10" targetFramework="netnanoframework10" />
   <package id="Nerdbank.GitVersioning" version="3.4.244" targetFramework="netnanoframework10" developmentDependency="true" />

WebSockets/System.Net.WebSockets.nfproj

@@ -86,7 +86,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http, Version=1.4.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Net.Http.1.4.0-preview.13\lib\System.Net.Http.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Net.Http.1.4.0-preview.15\lib\System.Net.Http.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Threading, Version=1.0.4.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">

WebSockets/packages.config

@@ -4,7 +4,7 @@
   <package id="nanoFramework.Runtime.Events" version="1.10.0-preview.6" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Collections" version="1.4.0-preview.9" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Net" version="1.8.0-preview.17" targetFramework="netnanoframework10" />
-  <package id="nanoFramework.System.Net.Http" version="1.4.0-preview.13" targetFramework="netnanoframework10" />
+  <package id="nanoFramework.System.Net.Http" version="1.4.0-preview.15" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Text" version="1.1.3-preview.9" targetFramework="netnanoframework10" />
   <package id="nanoFramework.System.Threading" version="1.0.4-preview.10" targetFramework="netnanoframework10" />
   <package id="Nerdbank.GitVersioning" version="3.4.244" targetFramework="netnanoframework10" developmentDependency="true" />

nanoframework.System.Net.WebSockets.Server.nuspec

@@ -25,7 +25,7 @@ There are also two other packages, one with the client API only and another with
       <dependency id="nanoFramework.System.Collections" version="1.4.0-preview.9" />
       <dependency id="nanoFramework.System.Net" version="1.8.0-preview.17" />
       <dependency id="nanoFramework.System.Text" version="1.1.3-preview.7" />
-      <dependency id="nanoFramework.System.Net.Http" version="1.4.0-preview.13" />
+      <dependency id="nanoFramework.System.Net.Http" version="1.4.0-preview.15" />
       <dependency id="nanoFramework.System.Threading" version="1.0.4-preview.8" />
     </dependencies>
   </metadata>

nanoframework.System.Net.WebSockets.nuspec

@@ -26,7 +26,7 @@ These are meant to be used when there is the need to use smaller assemblies.</de
       <dependency id="nanoFramework.System.Collections" version="1.4.0-preview.9" />
       <dependency id="nanoFramework.System.Net" version="1.8.0-preview.17" />
       <dependency id="nanoFramework.System.Text" version="1.1.3-preview.7" />
-      <dependency id="nanoFramework.System.Net.Http" version="1.4.0-preview.13" />
+      <dependency id="nanoFramework.System.Net.Http" version="1.4.0-preview.15" />
       <dependency id="nanoFramework.System.Threading" version="1.0.4-preview.8" />
     </dependencies>
   </metadata>