CCM-11228: Update letter repository tests and add MI schema and diagr… #456

Job	Run time
Set CI/CD metadata	6s
Commit stage / Check file format	5s
Commit stage / Scan secrets	8s
Commit stage / Detect Terraform Changes	4s
Commit stage / Check Markdown format	7s
Commit stage / Count lines of code	7s
Commit stage / Scan dependencies	34s
Commit stage / Check TODO usage	4s
Commit stage / Check English usage	6s
Commit stage / Lint Terraform	-1s
Commit stage / Run terraform-docs	-1s
Commit stage / Trivy Scan	-1s
Test stage / Typecheck	38s
Test stage / Unit tests	1m 17s
Test stage / Check generated dependencies	33s
Test stage / Linting	55s
Test stage / Test coverage	5s
Test stage / Perform static analysis	5s
Build stage / Build SDKs	1m 10s
Build stage / Build libs	2m 1s
Build stage / Build Docs	37s
Build stage / Build servers	1m 40s
Build stage / Build proxies	1m 32s
Acceptance stage / Environment set up	5s
Acceptance stage / Security test	4s
Acceptance stage / Contract test	5s
Acceptance stage / Integration test	5s
Acceptance stage / UI test	8s
Acceptance stage / Accessibility test	5s
Acceptance stage / Load test	4s
Acceptance stage / UI performance test	3s
Acceptance stage / Environment tear down	3s
Publish stage	-1s
	12m 32s

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