👷 Use Biqu BX for CI test (#24331)

buildroot/tests/BTT_SKR_SE_BX

@@ -9,10 +9,8 @@ set -e
 #
 # Build with the default configurations
 #
-restore_configs
-opt_set MOTHERBOARD BOARD_BTT_SKR_SE_BX
-opt_set SERIAL_PORT 1
-exec_test $1 $2 "Default Configuration" "$3"
+use_example_configs BIQU/BX
+exec_test $1 $2 "BIQU/BX" "$3"
 
 # clean up
 restore_configs