fix(ci): download submodule before compiling in case of examples checking error
fix(ci): download submodule before compiling in case of examples checking error

espressif/ESP8266_RTOS_SDK,espressif/ESP8266_RTOS_SDK,espressif/ESP8266_RTOS_SDK,espressif/ESP8266_RTOS_SDK,espressif/ESP8266_RTOS_SDK