test: Remove ZooKeeper 3.9.3 (#744) #45

Job	Run time
Detect relevant changed files	6s
Run cargo-udeps	2m 3s
Build/Publish amd64 Image	6m 40s
Build/Publish arm64 Image	5m 22s
Package/Publish 0.0.0-dev Helm Chart	25s
Publish/Sign 0.0.0-dev Index	32s
Run OpenShift Preflight Check for 0.0.0-dev-arm64	17s
Failure Notification	0s
Run OpenShift Preflight Check for 0.0.0-dev-amd64	17s
Finished Build and Publish	3s
	15m 45s

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