v17.11.19-preview

What's Changed

• Bump System.Threading.Tasks.Dataflow from 7.0.0 to 8.0.0 by Dependabot (@dependabot) in #1292
• Bump Microsoft.Bcl.AsyncInterfaces from 7.0.0 to 8.0.0 by Dependabot (@dependabot) in #1281
• Skip sending ETW trace event for nested lock which is always granted automatically by Lifeng Lu (@lifengl) in #1301
• Prevent creating two task waiting chains per AsyncLazy.GetValueAsync(CancellationToken) by Lifeng Lu (@lifengl) in #1296
• Ensure unique requestId values in ETW events by Andrew Arnott (@AArnott) in #1304
• Increase AsyncCrossProcessMutex stack size by Andrew Arnott (@AArnott) in #1310
• Add System.Memory as package dependency by Andrew Arnott (@AArnott) in #1317
• Fix documentation around AsyncQueue<T> completion
  by Andrew Arnott (@AArnott) in #1316

Full Changelog: v17.10.48...v17.11.19-preview