Description

This change enforces that deployment upgrades from Airflow 2 to 3 can only be made on deployments that are at least on Runtime version 8.7.0 (Airflow 2.6.3), because there are upgrade incompatibilities with prior Airflow versions.

🎟 Issue(s)

Resolves #1824

🧪 Functional Testing

• Updated unit tests
• Manually tested with deployments pre and post 8.7.0

📸 Screenshots

📋 Checklist

• Rebased from the main (or release if patching) branch (before testing)
• Ran make test before taking out of draft
• Ran make lint before taking out of draft
• Added/updated applicable tests
• Tested against Astro-API (if necessary).
• Tested against Houston-API and Astronomer (if necessary).
• Communicated to/tagged owners of respective clients potentially impacted by these changes.
• Updated any related documentation