Reduce the expected IMU rate to the actual rate published by the Create3

turtlebot4_diagnostics/turtlebot4_diagnostics/diagnostics_updater.py

@@ -113,7 +113,7 @@ def __init__(self):
         self.dock_visible = False
         self.lidar_freq_bounds = {'min': 5, 'max': 10}
         self.camera_freq_bounds = {'min': 5, 'max': 60}
-        self.imu_freq_bounds = {'min': 100, 'max': 100}
+        self.imu_freq_bounds = {'min': 30, 'max': 35}
         self.mouse_freq_bounds = {'min': 61, 'max': 63}
         self.detections = []