Integrate all projects at the start of each release

[dfarrell07]

Update the release process to open commit-based integration PRs across all projects, as the very first step of the release.

This ensures that all the jobs run (which will flag blocking security issues) and that all the projects can be integrated (so we catch required code changes before the first tag is published).

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further
activity occurs. Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further
activity occurs. Thank you for your contributions.