setuptools 71+ causes errors building px4_msgs. Update user guide to have users install working version

[CJdev99]

Update user guide to install pre setuptools 71 releases. setuptools 71+ causes the following errors building px4_msgs and px4_ros_com on fresh Ubuntu 22.04 + ROS2 Humble env:

File "/home/chase/.local/lib/python3.10/site-packages/setuptools/_core_metadata.py", line 290, in _distribution_fullname
    canonicalize_version(version, strip_trailing_zero=False),
TypeError: canonicalize_version() got an unexpected keyword argument 'strip_trailing_zero'

downgrading to setuptools==70.3.0 fixed that step for me.

[hamishwillee]

Can you please remove any changes other than the one in the /en branch. The toolchain automatically populates in the other branches and if I merge this the result may be a conflict.

@beniaminopozzan Is this technically OK? I am back proper on Weds and might do further investigation - hoping you know off the top of your head

[github-actions]

No flaws found

[CJdev99]

Hey @hamishwillee - updated to only update /en

[hamishwillee]

@CJdev99 Thanks for this. I'm waiting on @beniaminopozzan . My instinct is that it is better to see if we can get this fixed PX4/ROS side.

[beniaminopozzan]

Hi @CJdev99 , is it px4_ros_com that is failing to build?
I can't replicate your issue, could you provide detailed steps please? Thanks!