chore: use the omop cdm init container hosted on ghcr.io

[chgl]

No description provided.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ EDITORCONFIG	editorconfig-checker	3		0	0.03s
✅ REPOSITORY	checkov	yes		no	25.89s
✅ REPOSITORY	gitleaks	yes		no	0.69s
✅ REPOSITORY	git_diff	yes		no	0.11s
✅ REPOSITORY	secretlint	yes		no	1.73s
✅ REPOSITORY	syft	yes		no	1.33s
✅ REPOSITORY	trivy	yes		no	15.54s
✅ SPELL	misspell	3		0	0.05s
✅ YAML	prettier	3		0	0.65s
✅ YAML	v8r	3		0	2.37s

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