Update dependencies from https://github.com/dotnet/arcade build 20210701.2 (#25200)

[main] Update dependencies from dotnet/arcade

Author: dotnet-maestro[bot]

Diff for: eng/Version.Details.xml

@@ -49,13 +49,13 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="6.0.0-beta.21324.3">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="6.0.0-beta.21351.2">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>a68ec1edf328e737b31a09cb49e1929c28e91d0c</Sha>
+      <Sha>7f52af24016a4b749a2c1f219105c0f5a7100028</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="6.0.0-beta.21324.3">
+    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="6.0.0-beta.21351.2">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>a68ec1edf328e737b31a09cb49e1929c28e91d0c</Sha>
+      <Sha>7f52af24016a4b749a2c1f219105c0f5a7100028</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>

Diff for: eng/common/tools.ps1

@@ -380,7 +380,7 @@ function InitializeVisualStudioMSBuild([bool]$install, [object]$vsRequirements =
   $msbuildVersionDir = if ([int]$vsMajorVersion -lt 16) { "$vsMajorVersion.0" } else { "Current" }
 
   $local:BinFolder = Join-Path $vsInstallDir "MSBuild\$msbuildVersionDir\Bin"
-  $local:Prefer64bit = if ($vsRequirements.Prefer64bit) { $vsRequirements.Prefer64bit } else { $false }
+  $local:Prefer64bit = if (Get-Member -InputObject $vsRequirements -Name 'Prefer64bit') { $vsRequirements.Prefer64bit } else { $false }
   if ($local:Prefer64bit -and (Test-Path(Join-Path $local:BinFolder "amd64"))) {
     $global:_MSBuildExe = Join-Path $local:BinFolder "amd64\msbuild.exe"
   } else {

Diff for: global.json

@@ -18,7 +18,7 @@
     "rollForward": "latestMajor"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "6.0.0-beta.21324.3",
-    "Microsoft.DotNet.Helix.Sdk": "6.0.0-beta.21324.3"
+    "Microsoft.DotNet.Arcade.Sdk": "6.0.0-beta.21351.2",
+    "Microsoft.DotNet.Helix.Sdk": "6.0.0-beta.21351.2"
   }
 }