Lower battery voltage treshold

Author: ayin21

src/bitbots_motion/bitbots_hcm/config/hcm_wolfgang.yaml

@@ -47,6 +47,6 @@
 
     # Battery
     battery:
-      voltage_threshold: 18.0 # Voltage under which the battery is considered low
+      voltage_threshold: 6.0 # Voltage under which the battery is considered low
       debounce_time: 5.0 # Time the battery has to be under the threshold to be considered low [s]