bump zephyr version to 2.6.0; zephyr-sdk version to 0.12.4

[dayjaby]

The previous zephyr-sdk version 0.11.2 installed by micro_ros_setup contained no cmake files and it relied to be found via the home directory. That's not necessary with 0.12.4 anymore and the zephyr-sdk downloaded by micro_ros_setup works standalone.

I also bumped zephyrs version to 2.6.0 as it contains some better board dts. In my case I made a full CAN bus app work on the nucleo f446re with microros support.

[pablogs9]

Please modify the used version in the readme table: https://github.com/micro-ROS/micro_ros_setup#supported-platforms

[pablogs9]

Also, I have modified the target branch to main in order to apply this patch to Rolling release. I will backport it to galactic when merged.

Please rebase your changes on top of main

[dayjaby]

I did not test it yet on the other boards mentioned there though..I could run the same tests on a Olimex STM32 E407 later today.

[dayjaby]

README versions bumped and rebase done

$ git rebase origin/main
Current branch galactic is up to date.

So pull requests should be done against main?

[pablogs9]

Yes, the procedure is to make PR against main and then we will backport them to the stable versions: foxy and galactic.

Let me know when you finish the rebase, I still see changes in a lot of files.

Thanks for the contribution.

[dayjaby]

Done. Thanks for your patience!

[pablogs9]

Cool, I'm merging when the CI pass. Thanks again!

[pablogs9]

@mergify backport foxy galactic

[mergify]

Command backport foxy galactic: success

Backports have been created

• #356 bump zephyr version to 2.6.0; zephyr-sdk version to 0.12.4 (backport #351) has been created for branch foxy
• #357 bump zephyr version to 2.6.0; zephyr-sdk version to 0.12.4 (backport #351) has been created for branch galactic

Hey, I reacted but my real name is @Mergifyio