Release SwiftNIO 2.70.0 · apple/swift-nio

What's Changed

FileSystem.copyItem can parallelise directory copy by @UncleMattHope in #2806
ChannelOption: Allow types to be accessed with leading dot syntax by @ayush1794 in #2816
Make EventLoopPromise conform to Equatable by @gjcairo in #2714
Provide a default CopyStrategy overload for copyItem. by @UncleMattHope in #2818

Better align shutdown semantics of testing event loops by @simonjbeaumont in #2800
Clone files on Darwin rather than copying them by @rnro in #2823

Fix compose file used in update-benchmark-thresholds script by @simonjbeaumont in #2808
Remove advice to generate linux tests. by @PeterAdams-A in #2807
Make testInstantTCPConnectionResetThrowsError more reliable by @hamzahrmalik in #2810
[CI] Add shellcheck and fix up warnings by @FranzBusch in #2809
[CI] Fix docs check by @FranzBusch in #2811
[CI] Add Swift 6 language mode workflow by @FranzBusch in #2812
Fix test compilation on non-macOS Darwin platforms by @simonjbeaumont in #2817
Add .index-build to .gitignore by @MaxDesiatov in #2819
[CI] Add action and workflow to check for semver label by @FranzBusch in #2814
Update repository docs for swift-version support and recent CI check changes by @UncleMattHope in #2815
Fix failing build for test by @ayush1794 in #2824
Fix typo in comment in WebSocketErrorCodes.swift by @valeriyvan in #2604
[CI] Add a scheduled workflow for tests and benchmarks by @FranzBusch in #2822
[CI] Fix label check by @FranzBusch in #2827

Full Changelog: 2.69.0...2.70.0