test: Bump OPA to 1.12.3 (#671) #86

Job	Run time
Detect relevant changed files	3s
Run cargo-udeps	2m 3s
Build/Publish amd64 Image	6m 37s
Build/Publish arm64 Image	5m 14s
Package/Publish 0.0.0-dev Helm Chart	29s
Publish/Sign 0.0.0-dev Index	26s
Run OpenShift Preflight Check for 0.0.0-dev-amd64	20s
Run OpenShift Preflight Check for 0.0.0-dev-arm64	20s
Failure Notification	-1s
Finished Build and Publish	4s
	15m 35s

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