Release PR creation process

• Label the PRs you want to release with status/6-merge
• Go to your local rack clone.. go to master.. and git pull to make sure you're up to date
• Generate a release version number:

  $ make version-gen
  20230601170226
  

• Run scripts/release-pr <release-version>
  • this will take all of the prs labeled with status/6-merge and combine them into a single release pr
  • you can rerun this at any time to bundle the current prs for the release. if you add/remove status/6-merge label from prs, you need to rerun this command with same release version number.