Update dependencies from https://github.com/aspnet/AspNetCore-Tooling build 20191017.12 (#15149)

- Microsoft.AspNetCore.Mvc.Razor.Extensions - 5.0.0-alpha1.19517.12
- Microsoft.AspNetCore.Razor.Language - 5.0.0-alpha1.19517.12
- Microsoft.CodeAnalysis.Razor - 5.0.0-alpha1.19517.12
- Microsoft.NET.Sdk.Razor - 5.0.0-alpha1.19517.12

eng/Version.Details.xml

@@ -13,21 +13,21 @@
       <Uri>https://github.com/aspnet/Blazor</Uri>
       <Sha>af9bec917415a00716551608d734ddb1b729eb2b</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.AspNetCore.Razor.Language" Version="5.0.0-alpha1.19515.1">
+    <Dependency Name="Microsoft.AspNetCore.Razor.Language" Version="5.0.0-alpha1.19517.12">
       <Uri>https://github.com/aspnet/AspNetCore-Tooling</Uri>
-      <Sha>9a8b07ac0b544bbc3cb69cf157383ce6b60eb570</Sha>
+      <Sha>5d3c4074fe2df12afefab2292e4644b4f2686b29</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.AspNetCore.Mvc.Razor.Extensions" Version="5.0.0-alpha1.19515.1">
+    <Dependency Name="Microsoft.AspNetCore.Mvc.Razor.Extensions" Version="5.0.0-alpha1.19517.12">
       <Uri>https://github.com/aspnet/AspNetCore-Tooling</Uri>
-      <Sha>9a8b07ac0b544bbc3cb69cf157383ce6b60eb570</Sha>
+      <Sha>5d3c4074fe2df12afefab2292e4644b4f2686b29</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.Razor" Version="5.0.0-alpha1.19515.1">
+    <Dependency Name="Microsoft.CodeAnalysis.Razor" Version="5.0.0-alpha1.19517.12">
       <Uri>https://github.com/aspnet/AspNetCore-Tooling</Uri>
-      <Sha>9a8b07ac0b544bbc3cb69cf157383ce6b60eb570</Sha>
+      <Sha>5d3c4074fe2df12afefab2292e4644b4f2686b29</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.Sdk.Razor" Version="5.0.0-alpha1.19515.1">
+    <Dependency Name="Microsoft.NET.Sdk.Razor" Version="5.0.0-alpha1.19517.12">
       <Uri>https://github.com/aspnet/AspNetCore-Tooling</Uri>
-      <Sha>9a8b07ac0b544bbc3cb69cf157383ce6b60eb570</Sha>
+      <Sha>5d3c4074fe2df12afefab2292e4644b4f2686b29</Sha>
     </Dependency>
     <Dependency Name="dotnet-ef" Version="5.0.0-alpha1.19517.14">
       <Uri>https://github.com/aspnet/EntityFrameworkCore</Uri>

eng/Versions.props

@@ -161,10 +161,10 @@
     <MicrosoftEntityFrameworkCoreToolsPackageVersion>5.0.0-alpha1.19517.14</MicrosoftEntityFrameworkCoreToolsPackageVersion>
     <MicrosoftEntityFrameworkCorePackageVersion>5.0.0-alpha1.19517.14</MicrosoftEntityFrameworkCorePackageVersion>
     <!-- Packages from aspnet/AspNetCore-Tooling -->
-    <MicrosoftAspNetCoreMvcRazorExtensionsPackageVersion>5.0.0-alpha1.19515.1</MicrosoftAspNetCoreMvcRazorExtensionsPackageVersion>
-    <MicrosoftAspNetCoreRazorLanguagePackageVersion>5.0.0-alpha1.19515.1</MicrosoftAspNetCoreRazorLanguagePackageVersion>
-    <MicrosoftCodeAnalysisRazorPackageVersion>5.0.0-alpha1.19515.1</MicrosoftCodeAnalysisRazorPackageVersion>
-    <MicrosoftNETSdkRazorPackageVersion>5.0.0-alpha1.19515.1</MicrosoftNETSdkRazorPackageVersion>
+    <MicrosoftAspNetCoreMvcRazorExtensionsPackageVersion>5.0.0-alpha1.19517.12</MicrosoftAspNetCoreMvcRazorExtensionsPackageVersion>
+    <MicrosoftAspNetCoreRazorLanguagePackageVersion>5.0.0-alpha1.19517.12</MicrosoftAspNetCoreRazorLanguagePackageVersion>
+    <MicrosoftCodeAnalysisRazorPackageVersion>5.0.0-alpha1.19517.12</MicrosoftCodeAnalysisRazorPackageVersion>
+    <MicrosoftNETSdkRazorPackageVersion>5.0.0-alpha1.19517.12</MicrosoftNETSdkRazorPackageVersion>
   </PropertyGroup>
   <!--