Update release notes

Author: cjdsellers

RELEASES.md

@@ -1,6 +1,6 @@
 # NautilusTrader 1.186.0 Beta
 
-Released on TBD (UTC).
+Released on 2nd February 2024 (UTC).
 
 ### Enhancements
 None
@@ -11,6 +11,8 @@ None
 ### Fixes
 - Fixed Interactive Brokers get account positions bug (#1475), thanks @benjaminsingleton
 - Fixed `TimeBarAggregator` handling of interval types on build
+- Fixed `BinanceSpotExecutionClient` non-existent method name, thanks @sunlei
+- Fixed unused `psutil` import, thanks @sunlei
 
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