Bump BenchmarkDotNet from 0.13.1 to 0.15.4#2236

dependabot[bot] wants to merge 1 commit intomaindotnet/reactive:mainfrom

dependabot/nuget/Ix.NET/Source/Benchmarks.System.Interactive/BenchmarkDotNet-0.15.4dotnet/reactive:dependabot/nuget/Ix.NET/Source/Benchmarks.System.Interactive/BenchmarkDotNet-0.15.4Copy head branch name to clipboard