Update cmake-variants.TEMPLATE.json
add missing option USE_RNG
"ESP32_LIBS_PATH" : "<path-to-esp32-libraries-mind-the-forward-slash>/libs",
"TARGET_SERIES" : "<series-name-of-the-target-chip-----STM32F0xx-STM32F4xx-STM32F7xx-ESP32>",
"USE_FPU" : "<TRUE-for-using-hardware-floating-point-unit>",
+ "USE_RNG" : "<TRUE-for-using-hardware-true-random-generator-unit>",
"DP_FLOATINGPOINT" : "<OFF-default-ON-for-adding-support-for-double-precision-floating-point>",
"SUPPORT_ANY_BASE_CONVERSION" : "<OFF-default-ON-for-adding-support-for-conversion-strings-to-values-on-any-base>",
"RTOS" : "<one-of-valid-rtos-options----CHIBIOS-FREERTOS>",
