Update app to 15 (#40) #63

Job	Run time
Begin trail	7s
Pull-request	8s
Build backend	6s
Deploy to development / deploy	4s
Deploy to stage / deploy	4s
Check for semver tag	3s
get-approver-for-stage	5s
Assert artifacts	0s
Create GitHub Release	0s
Deploy to production	0s
get-approver-for-production	0s
	37s

Provide feedback