Add MI Submitted event schema and update async API spec #1465

Job	Run time
Set CI/CD metadata	6s
Commit stage / Check English usage	9s
Commit stage / Check TODO usage	4s
Commit stage / Scan secrets	7s
Commit stage / Check Markdown format	5s
Commit stage / Check file format	8s
Commit stage / Detect Terraform Changes	5s
Commit stage / Count lines of code	6s
Commit stage / Scan dependencies	28s
Commit stage / Check for changes to event schema package compared to main branch	5s
Commit stage / Check event schemas have been regenerated	40s
Commit stage / Check event schema version has been updated	4s
Commit stage / Lint Terraform	-1s
Commit stage / Run terraform-docs	-1s
Commit stage / Trivy Scan	-1s
Test stage / Check generated dependencies	49s
Test stage / Unit tests	2m 31s
Test stage / Typecheck	43s
Test stage / Linting	50s
Test stage / Test coverage	4s
Test stage / Perform static analysis	1m 4s
Build stage	0s
Publish stage	-1s
Acceptance stage	-1s
	8m 3s

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