Updating .NET/ASP.NET package references

Author: fabiocav

src/WebJobs.Script.WebHost/WebJobs.Script.WebHost.csproj

@@ -45,7 +45,7 @@
 
   <ItemGroup>
     <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.0" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.1" />
+    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.2" />
     <PackageReference Include="Microsoft.AspNetCore.Buffering" Version="0.4.0-preview2-28189" />
     <PackageReference Include="Microsoft.Azure.AppService.Proxy.Client" Version="2.0.5350001-beta-fc119b98" />
     <PackageReference Include="Microsoft.AspNetCore.Server.IIS" Version="2.1.0-a-oob-2-1-oob-17035" />