Update dependencies from https://github.com/dotnet/aspnetcore build 20200331.16 (#972)

- Microsoft.AspNetCore.App.Ref - 5.0.0-preview.4.20181.16

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -22,9 +22,9 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>c74407fcaff466a17b6e98f1dcc969248de506fe</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.AspNetCore.App.Ref" Version="5.0.0-preview.4.20180.11">
+    <Dependency Name="Microsoft.AspNetCore.App.Ref" Version="5.0.0-preview.4.20181.16">
       <Uri>https://github.com/dotnet/aspnetcore</Uri>
-      <Sha>cffd4da47625a2754b7e6085b38910d22e5da8ae</Sha>
+      <Sha>b73e221c64397487cc1846bf14b72d128e97b3ca</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>

eng/Versions.props

@@ -20,7 +20,7 @@
     <!-- Latest shared runtime version updated by darc -->
     <MicrosoftNETCoreAppVersion>5.0.0-preview.3.20180.15</MicrosoftNETCoreAppVersion>
     <!-- Latest shared aspnetcore version updated by darc -->
-    <MicrosoftAspNetCoreAppRefVersion>5.0.0-preview.4.20180.11</MicrosoftAspNetCoreAppRefVersion>
+    <MicrosoftAspNetCoreAppRefVersion>5.0.0-preview.4.20181.16</MicrosoftAspNetCoreAppRefVersion>
   </PropertyGroup>
   <PropertyGroup>
     <!-- Opt-in/out repo features -->