Update dependencies from https://github.com/dotnet/arcade build 20211021.5 (#1700)

Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.GenAPI , Microsoft.DotNet.Helix.Sdk
 From Version 7.0.0-beta.21520.1 -> To Version 7.0.0-beta.21521.5
Co-authored-by: Ndotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

eng/Version.Details.xml

 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="7.0.0-beta.21520.1">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="7.0.0-beta.21521.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>76b53a100dd070e5a20377db79ba5faddd50627e</Sha>
+      <Sha>fcadecff4e76a0ca9c5e78b7d1b09728006e8c52</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="7.0.0-beta.21520.1">
+    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="7.0.0-beta.21521.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>76b53a100dd070e5a20377db79ba5faddd50627e</Sha>
+      <Sha>fcadecff4e76a0ca9c5e78b7d1b09728006e8c52</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.GenAPI" Version="7.0.0-beta.21520.1">
+    <Dependency Name="Microsoft.DotNet.GenAPI" Version="7.0.0-beta.21521.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>76b53a100dd070e5a20377db79ba5faddd50627e</Sha>
+      <Sha>fcadecff4e76a0ca9c5e78b7d1b09728006e8c52</Sha>
     </Dependency>
   </ToolsetDependencies>
   <!-- ProductDependencies -->

eng/Versions.props

@@ -4,7 +4,7 @@
     <!-- Disabling the check for End of live TFMs since we still target netcoreapp 2.1 -->
     <CheckEolTargetFramework>false</CheckEolTargetFramework>
     <PreReleaseVersionLabel>prerelease</PreReleaseVersionLabel>
-    <MicrosoftDotNetGenAPIPackageVersion>7.0.0-beta.21520.1</MicrosoftDotNetGenAPIPackageVersion>
+    <MicrosoftDotNetGenAPIPackageVersion>7.0.0-beta.21521.5</MicrosoftDotNetGenAPIPackageVersion>
     <!-- dotnet/corefx dependencies -->
     <SystemDrawingCommonPackageVersion>5.0.3</SystemDrawingCommonPackageVersion>
     <SystemIOPortsPackageVersion>5.0.1</SystemIOPortsPackageVersion>

eng/common/post-build/sourcelink-validation.ps1

@@ -22,6 +22,11 @@ $RetryWaitTimeInSeconds = 30
 # Wait time between check for system load
 $SecondsBetweenLoadChecks = 10
 
+if (!$InputPath -or !(Test-Path $InputPath)){
+  Write-Host "No files to validate."
+  ExitWithExitCode 0
+}
+
 $ValidatePackage = {
   param( 
     [string] $PackagePath                                 # Full path to a Symbols.NuGet package

global.json

@@ -12,7 +12,7 @@
     "version": "6.0.100-rc.1.21430.12"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "7.0.0-beta.21520.1",
-    "Microsoft.DotNet.Helix.Sdk": "7.0.0-beta.21520.1"
+    "Microsoft.DotNet.Arcade.Sdk": "7.0.0-beta.21521.5",
+    "Microsoft.DotNet.Helix.Sdk": "7.0.0-beta.21521.5"
   }
 }