Reduce USB CDC buffer size

AdaptiveBrightnessFirmware/Src/usbd_cdc_if.c

@@ -65,8 +65,8 @@
 /* USER CODE BEGIN PRIVATE_DEFINES */
 /* Define size for the receive and transmit buffer over CDC */
 /* It's up to user to redefine and/or remove those define */
-#define APP_RX_DATA_SIZE  1000
-#define APP_TX_DATA_SIZE  1000
+#define APP_RX_DATA_SIZE  512
+#define APP_TX_DATA_SIZE  512
 /* USER CODE END PRIVATE_DEFINES */
 
 /**