refactor: extract dereference/validate pipeline from reconcile_airflow #430

Job	Run time
Detect relevant changed files	6s
Build/Publish arm64 Image	5m 29s
Run cargo-udeps	2m 3s
Build/Publish amd64 Image	6m 51s
Publish/Sign 0.0.0-pr795 Index	32s
Package/Publish 0.0.0-pr795 Helm Chart	33s
Run OpenShift Preflight Check for 0.0.0-pr795-amd64	19s
Run OpenShift Preflight Check for 0.0.0-pr795-arm64	16s
Failure Notification	0s
Finished Build and Publish	4s
	16m 13s

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