tests: drivers: can: timing: exclude 20kbit/s test for ESP32 TWAI
tests: drivers: can: timing: exclude 20kbit/s test for ESP32 TWAI

Exclude the 20kbit/s CAN timing test from running on the Espressif ESP32
TWAI driver. The TWAI does not support bitrates below 50kbit/s due to the
combination of CAN clock and prescaler range.

Signed-off-by: Henrik Brix Andersen <a076b11c2cc63ccdc903dbe182e1eecc3cbbc094@brixandersen.dk>

galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr