Fix launch file to use valid defaults

Author: Stuart Alldritt

launch/driver.launch

@@ -3,7 +3,7 @@
   <arg name="depth_mode"        default="WFOV_UNBINNED" />  <!-- Set the depth camera mode, which affects FOV, depth range, and camera resolution. See Azure Kinect documentation for full details. Valid options: NFOV_UNBINNED, NFOV_2X2BINNED, WFOV_UNBINNED, WFOV_2X2BINNED -->
   <arg name="color_enabled"     default="true" />           <!-- Enable or disable the color camera -->
   <arg name="color_resolution"  default="1536P" />          <!-- Resolution at which to run the color camera. Valid options: 720P, 1080P, 1440P, 1536P, 2160P, 3072P -->
-  <arg name="fps"               default="30" />             <!-- FPS to run both cameras at. Valid options are 5, 15, and 30 -->
+  <arg name="fps"               default="5" />             <!-- FPS to run both cameras at. Valid options are 5, 15, and 30 -->
   <arg name="point_cloud"       default="true" />           <!-- Generate a point cloud from depth data. Requires depth_enabled -->
   <arg name="rgb_point_cloud"   default="true" />           <!-- Colorize the point cloud using the RBG camera. Requires color_enabled and depth_enabled -->
   <arg name="required"         default="false" />          <!-- Argument which specified if the entire launch file should terminate if the node dies -->