Update cool642tb-mini.dtsi

Author: na-ka-no

config/boards/shields/Test/cool642tb-mini.dtsi

@@ -99,7 +99,7 @@
         compatible = "alps,ec11";
         a-gpios = <&xiao_d 0 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
         b-gpios = <&xiao_d 5 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
-        steps = <12>;
+        steps = <24>;
         status = "disabled";
     };