Adjust Default LogLevel to Warn (#871)

This commit reduces verbose logging of events like PushPull, which may
not be necessary for developers. Setting LogLevel to Warn captures
important warnings and potential issues while improving overall log
relevance and reducing noise.

src/util/logger.ts

@@ -23,7 +23,7 @@ export enum LogLevel {
   Fatal,
 }
 
-let level = LogLevel.Info;
+let level = LogLevel.Warn;
 
 /**
  * `setLogLevel` sets log level.