Update dependencies from https://github.com/dotnet/arcade build 20210909.5

Microsoft.DotNet.Arcade.Sdk
 From Version 6.0.0-beta.21167.3 -> To Version 7.0.0-beta.21459.5

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.21453.2">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="7.0.0-beta.21459.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>0ec8dbacaefa7ccdb4bc96e120e07dc60c6eda98</Sha>
+      <Sha>fa4a48044d33222537e6dbd000f8a2adaa7a15c7</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
   </ToolsetDependencies>

global.json

@@ -7,6 +7,6 @@
     "xcopy-msbuild": "16.8.0-preview2.1"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "7.0.0-beta.21453.2"
+    "Microsoft.DotNet.Arcade.Sdk": "7.0.0-beta.21459.5"
   }
 }