Azure Pipelines deprecated tasks retirement schedule

This post announces the retirement schedule for deprecated Azure Pipelines tasks, including ApacheJMeterLoadTest@1, AppCenterDistribute@1/2, AzureMonitor@0, Chef@1, ChefKnife@1, CloudLoadTest@1, CondaEnvironment@1, DeployVisualStudioTestAgent@2, DotNetCoreInstaller@1, DownloadPackage@0, IISWebAppDeployment@1, NuGet@0, NuGetInstaller@0, NuGetPackager@0, NuGetPublisher@0, NuGetRestore@1, QuickPerfTest@1, SqlServerDacpacDeployment@1, and XamarinTestCloud@1. It provides guidance on updating pipelines to newer tasks and details the schedule for task failures in Azure DevOps Service, with a note about future retirement in Azure DevOps Server. A temporary workaround using `continueOnError: true` is also provided.