Update AWS SDK to Preview 11

Author: GarrettBeatty

src/Amazon.Extensions.Configuration.SystemsManager/Amazon.Extensions.Configuration.SystemsManager.csproj

@@ -44,9 +44,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AWSSDK.AppConfigData" Version="4.0.0-preview.8" />
-    <PackageReference Include="AWSSDK.Extensions.NETCore.Setup" Version="4.0.0-preview.8" />
-    <PackageReference Include="AWSSDK.SimpleSystemsManagement" Version="4.0.0-preview.8" />
+    <PackageReference Include="AWSSDK.AppConfigData" Version="4.0.0-preview.11" />
+    <PackageReference Include="AWSSDK.Extensions.NETCore.Setup" Version="4.0.0-preview.11" />
+    <PackageReference Include="AWSSDK.SimpleSystemsManagement" Version="4.0.0-preview.11" />
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="2.0.*" />
     <PackageReference Include="System.Text.Json" Condition=" '$(TargetFramework)' == 'netstandard2.0' " Version="8.0.5" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />

test/Amazon.Extensions.Configuration.SystemsManager.Integ/Amazon.Extensions.Configuration.SystemsManager.Integ.csproj

@@ -7,9 +7,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AWSSDK.AppConfig" Version="4.0.0-preview.8" />
+    <PackageReference Include="AWSSDK.AppConfig" Version="4.0.0-preview.11" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-    <PackageReference Include="AWSSDK.SecurityToken" Version="4.0.0-preview.8" />
+    <PackageReference Include="AWSSDK.SecurityToken" Version="4.0.0-preview.11" />
     <PackageReference Include="xunit" Version="2.9.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
       <PrivateAssets>all</PrivateAssets>

test/Amazon.Extensions.Configuration.SystemsManager.Integ/AppConfigEndToEndTests.cs

@@ -6,7 +6,6 @@
 using System.Text.Json;
 using System.Threading.Tasks;
 
-using Amazon;
 using Amazon.AppConfig;
 using Amazon.AppConfig.Model;
 using Amazon.Extensions.NETCore.Setup;