app: Update `template-infra:app` to version 0.15.1.post3.dev0+acd5bab #515

Job	Run time
Check compliance with checkov	21s
Check compliance with tfsec	16s
Lint GitHub Actions workflows	6s
Check Terraform format	3s
Lint scripts	3s
Validate Terraform modules	1m 4s
	1m 53s

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