test for user-owned letter submission with proofing enabled #4804

Job	Run time
Set CI/CD metadata	5s
Commit stage / Check TODO usage	6s
Commit stage / Scan dependencies	1m 36s
Commit stage / Count lines of code	27s
Commit stage / Detect Terraform Changes	6s
Commit stage / Scan secrets	32s
Commit stage / Check Markdown format	6s
Commit stage / Check file format	10s
Commit stage / Check English usage	8s
Commit stage / Run terraform-docs	12s
Commit stage / Lint Terraform	3s
Commit stage / Trivy Scan	57s
Test stage / Unit tests	3m 51s
Test stage / Check generated dependencies	1m 6s
Test stage / Linting	2m 16s
Test stage / Typecheck	1m 55s
Test stage / Test coverage	4s
Test stage / Perform static analysis	1m 14s
Acceptance stage / Generate sandbox name	6s
Acceptance stage / Step 1 / Sandbox set up	5m 58s
Acceptance stage / Step 2 / Acceptance tests	19m 6s
Acceptance stage / Step 3 / Sandbox tear down	7m 3s
	47m 7s

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