requirements: bump pyelftools to >=0.27
requirements: bump pyelftools to >=0.27

The minimum version of pyelftools is 0.27 to make it working
with databse_gen.py

Signed-off-by: Adrian Bonislawski <c1526623796a63932b288786ffa521d7fcf07c3a@intel.com>

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