carter updated to netcore 2.2 (#4316)

frameworks/CSharp/carter/Benchmarks/Benchmarks.csproj

@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <TargetFramework>netcoreapp2.2</TargetFramework>
     <OutputType>Exe</OutputType>
     <NoDefaultLaunchSettingsFile>true</NoDefaultLaunchSettingsFile>
-    <LangVersion>7.3</LangVersion>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Carter" Version="3.7.0" />
+    <PackageReference Include="Carter" Version="3.11.0" />
     <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Utf8Json" Version="1.3.7" />
   </ItemGroup>

frameworks/CSharp/carter/carter.dockerfile

@@ -1,9 +1,9 @@
-FROM microsoft/dotnet:2.1-sdk-stretch AS build
+FROM microsoft/dotnet:2.2-sdk AS build
 WORKDIR /app
 COPY Benchmarks .
 RUN dotnet publish -c Release -o out
 
-FROM microsoft/dotnet:2.1-aspnetcore-runtime AS runtime
+FROM microsoft/dotnet:2.2-aspnetcore-runtime AS runtime
 ENV ASPNETCORE_URLS http://+:8080
 ENV COMPlus_ReadyToRun 0
 WORKDIR /app