CCM-8508 Update to next 15.1.6 and supporting changes #908

Job	Run time
Set CI/CD metadata	2s
Commit stage / Count lines of code	5s
Commit stage / Check Markdown format	3s
Commit stage / Check English usage	6s
Commit stage / Check file format	7s
Commit stage / Detect Terraform Changes	3s
Commit stage / Scan dependencies	25s
Commit stage / Scan secrets	5s
Commit stage / TFSec Scan	0s
Commit stage / Lint Terraform	0s
Test stage / Linting	1m 9s
Test stage / Unit tests	1m 31s
Test stage / Perform static analysis	45s
Test stage / Test coverage	1m 0s
Build stage / Artefact 2	6s
Build stage / Artefact 1	3s
Acceptance stage / Step 1 / Sandbox set up	2m 15s
Acceptance stage / Step 2 / Acceptance tests	5m 6s
Acceptance stage / Step 3 / Sandbox tear down	1m 48s
	14m 39s

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