chore: use new testing-tools image (#998) #26

Job	Run time
Detect relevant changed files	5s
Run cargo-udeps	1m 47s
Build/Publish arm64 Image	5m 22s
Build/Publish amd64 Image	6m 54s
Package/Publish 0.0.0-dev Helm Chart	28s
Publish/Sign 0.0.0-dev Index	25s
Run OpenShift Preflight Check for 0.0.0-dev-amd64	17s
Run OpenShift Preflight Check for 0.0.0-dev-arm64	20s
Failure Notification	0s
Finished Build and Publish	2s
	15m 40s

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