release: Zephyr v3.0.0-rc3
release: Zephyr v3.0.0-rc3

Bump version file to Zephyr v3.0.0-rc3

Signed-off-by: Dan Kalowsky <9431e108b67d1efa9df54e6351da1951bcd9be32@deadmime.org>

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