updated config to reasonable values

config/franka_gripper_node.yaml

 publish_rate: 30  # [Hz]
-default_speed: 0.1  # [m/s]
+default_speed: 0.08  # [m/s]
 default_grasp_epsilon:
-  inner: 0.005 # [m]
-  outer: 0.005 # [m]
+  inner: 0.01 # [m]
+  outer: 0.01 # [m]