fix(secondary_sources): Error: Reference to undeclared resource

[mehowthe]

what

• Fixes typo - name of the variable used for provision "secondary sources"

why

• Failing with error:

╷
│ Error: Reference to undeclared resource
│ 
│   on .terraform/modules/cicd.pr_build/main.tf line 438, in resource "aws_codebuild_project" "default":
│  438:       report_build_status = secondary_source.value.report_build_status
│ 
│ A managed resource "secondary_source" "value" has not been declared in module.cicd.module.pr_build.