chore: Remove ZooKeeper to 3.8.4 from tests #1989

Job	Run time
Check if committed Helm charts are up to date	39s
Check if committed README is the one we would render from the available parts	25s
Run Cargo Deny (advisories)	40s
Run Cargo Deny (bans licenses sources)	38s
Run Clippy	38s
Run Rustfmt	11s
Run RustDoc	1m 4s
Run Cargo Tests	37s
Run Cargo Udeps	1m 26s
Select target helm repository based on action trigger	1s
All tests passed	1s
Package Charts, Build Docker Image and publish them - ubuntu-latest	10m 9s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 18s
Build and publish manifest list	50s
Run the OpenShift Preflight check on the published images	12s
	26m 49s

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