[release/6.0-preview6] Update dependencies from dotnet/arcade

[dotnet-maestro]

This pull request updates the following dependencies

From https://github.com/dotnet/arcade

• Subscription: 815e02c7-6677-4cb2-ccfe-08d9301a11ed
• Build: 20210705.2
• Date Produced: 7/5/2021 4:20 PM
• Commit: 615fbd8c498067deae160a696701eaf33155da56
• Branch: refs/heads/main

• Updates:
  • Microsoft.DotNet.Build.Tasks.Templating: from 6.0.0-beta.21311.3 to 6.0.0-beta.21355.2
  • Microsoft.DotNet.Build.Tasks.Installers: from 6.0.0-beta.21311.3 to 6.0.0-beta.21355.2
  • Microsoft.DotNet.Arcade.Sdk: from 6.0.0-beta.21311.3 to 6.0.0-beta.21355.2
  • Microsoft.DotNet.Helix.Sdk: from 6.0.0-beta.21311.3 to 6.0.0-beta.21355.2

[ghost]

Auto-approving dependency update.

[TanayParikh]

.dotnet\sdk\6.0.100-preview.6.21313.2\NuGet.targets(131,5): error : (NETCORE_ENGINEERING_TELEMETRY=Restore) Failed to retrieve information about 'Microsoft.AspNetCore.HttpsPolicy' from remote source 'https://pkgs.dev.azure.com/dnceng/9ee6d478-d288-47f7-aacc-f6e6d082ae6d/_packaging/d1622942-d16f-48e5-bc83-96f4539e7601/nuget/v3/flat2/microsoft.aspnetcore.httpspolicy/index.json'.
  An error occurred while sending the request.
  Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host..
  An existing connection was forcibly closed by the remote host.

Likely short term flakiness, retrying.

[TanayParikh]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[TanayParikh]

These shared fx failures look like they may be related to the issues we're seeing in #34097.

[Tratcher]

Can this PR and branch be abandon now that preview6 is done?

[dougbu]

Can this PR and branch be abandon now that preview6 is done?

Would first like to know why this PR was triggered in the first place. July 7 was almost two weeks after the branch locked down and the subscription has - Update Frequency: None. So, someone triggered it manually.

@dotnet/aspnet-build @lukas-lansky @mmitche was this kicked off for a reason❔

[lukas-lansky]

@Tratcher @dougbu Agreed that this should be abandoned. I didn't trigger this one, but I think the reasoning was to unblock all subscriptions affected by the Arcade regression. @missymessa or @riarenas might provide more context.

[missymessa]

I don't have any context on this dependency flow PR. I was reverting some things in Arcade last week, but that was on the main branch, to unblock folks there.

[riarenas]

.NET 6 release branches take updates from ".net eng - latest" so if the subscriptions for that channel were triggered when trying to revert the breaks in arcade main, this would've been created then.

[missymessa]

Good to know, @riarenas. Regardless, the reverts I made last week we're not accompanied by any manual subscription triggers on my part. If this repo doesn't need the this version, feel free to close the PR.