Return the latest deployment in `ci_environment_status` endpoint
Deployment.where(environment: environment).find_by_sha(sha)
should be Deployment.where(environment: environment).order(id: :desc).find_by_sha(sha)
Deployment.where(environment: environment).find_by_sha(sha)
should be Deployment.where(environment: environment).order(id: :desc).find_by_sha(sha)