fix libstdc++ header include error

BewareMyPower · BewareMyPower · commit fc04394d467b · 2026-03-05T23:07:48.000+08:00
diff --git a/lib/ClientConfigurationImpl.h b/lib/ClientConfigurationImpl.h
@@ -23,6 +23,7 @@
 #include <pulsar/ServiceInfo.h>
 
 #include <chrono>
+#include <mutex>
 #include <shared_mutex>
 
 #include "ServiceNameResolver.h"
