Update dependencies from https://github.com/dotnet/arcade build 20211018.1 (#756)

[main] Update dependencies from dotnet/arcade

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -3,9 +3,9 @@
   <ProductDependencies>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="7.0.0-beta.21508.1">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="7.0.0-beta.21518.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>020ac68b5848016459652ebf4ed965b9800fe426</Sha>
+      <Sha>c5a300999a6ab2792108190118280da36fb1991e</Sha>
     </Dependency>
     <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="5.0.0-alpha.1.20473.1">
       <Uri>https://github.com/dotnet/source-build-reference-packages</Uri>

global.json

@@ -3,6 +3,6 @@
     "dotnet": "6.0.100-rc.1.21430.12"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "7.0.0-beta.21508.1"
+    "Microsoft.DotNet.Arcade.Sdk": "7.0.0-beta.21518.1"
   }
 }