refactor: extract dereference/validate pipeline from reconcile #169

Job	Run time
Detect relevant changed files	4s
Run cargo-udeps	2m 4s
Build/Publish amd64 Image	6m 36s
Build/Publish arm64 Image	5m 30s
Publish/Sign 0.0.0-pr1034 Index	31s
Package/Publish 0.0.0-pr1034 Helm Chart	28s
Run OpenShift Preflight Check for 0.0.0-pr1034-amd64	16s
Run OpenShift Preflight Check for 0.0.0-pr1034-arm64	19s
Failure Notification	0s
Finished Build and Publish	4s
	15m 52s

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