chore: Add OPA 1.12.2, remove 1.4.2 (#797) #45

Job	Run time
Detect relevant changed files	5s
Run cargo-udeps	1m 57s
Build/Publish arm64 Image	5m 17s
Build/Publish amd64 Image	6m 51s
Package/Publish 0.0.0-dev Helm Chart	25s
Publish/Sign 0.0.0-dev Index	23s
Run OpenShift Preflight Check for 0.0.0-dev-arm64	22s
Run OpenShift Preflight Check for 0.0.0-dev-amd64	19s
Failure Notification	0s
Finished Build and Publish	3s
	15m 42s

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