fixed mismatching types

WatcherAgent/src/main.rs

@@ -375,7 +375,7 @@ impl MetricsCollector {
                 0.0
             };
 
-            let avg_temp = if count > 0 { temp / count as f64 } else { 0.0 };
+            let avg_temp = if count > 0 { temp / count as f32 } else { 0.0 };
 
             (size_gb, usage, avg_temp)
         };