Preparing for Iron branching on Rolling 2023-04-18

[Yadunund]

Update

The iron branching from rolling is complete along with

• ros2.repos for iron
• iron distro in rosdistro
• CI and buildfarm configs for iron
• Interim tarballs for iron:
  • packaging_linux #3005 [Jenkins]
  • packaging_linux-aarch64 #2363 [Jenkins]
  • packaging_linux-rhel #1505 [Jenkins]
  • packaging_windows #2834 [Jenkins]
  • packaging_windows_debug #1793 [Jenkins]

We will be un-freezing Rolling by the end of this Friday, 28th April 2359 PST. Feature merges into rolling branches can be resumed following this.

Until then, the release team will work on bumping the minor version on rolling for all core packages followed by another round of Rolling releases.