chore(ct): update demo compose and docs to use `latest` image tags #14

Job	Run time
(Stable / JDK 17) Unit Tests	4m 55s
(Stable / JDK 17) Integration Tests	2m 52s
Coverage Report Submission	25s
Publish App Image / Package & Publish	0s
Publish App Image / Build & Test	0s
Publish App Image / Check for Secrets Availability	0s
	8m 12s

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