Summary: Apache Airflow 1.10.11 introduces a substantial refactor of their Kubernetes APIs, which breaks dagster-airflow. Pinning for now until we have time to address the compatibility issues.

Test Plan: buildkite

Reviewers: catherinewu, alangenfeld

Reviewed By: alangenfeld

Subscribers: alangenfeld

Differential Revision: https://dagster.phacility.com/D3839