chore: Describe RBAC rules, remove unnecessary rules #284

Job	Run time
Detect relevant changed files	6s
Build/Publish amd64 Image	6m 40s
Run cargo-udeps	1m 53s
Build/Publish arm64 Image	5m 4s
Publish/Sign 0.0.0-pr767 Index	24s
Package/Publish 0.0.0-pr767 Helm Chart	23s
Run OpenShift Preflight Check for 0.0.0-pr767-amd64	17s
Failure Notification	0s
Run OpenShift Preflight Check for 0.0.0-pr767-arm64	19s
Finished Build and Publish	5s
	15m 11s

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