Merge pull request #343 from NHSDigital/PPHA-641-Get-the-review-app-environment-up-and-running-CICD

retest the pr_argument logic

Author: mrlockstar

.github/workflows/stage-5-deploy.yaml

@@ -47,7 +47,7 @@ jobs:
           if [[ -n "$PR_NUMBER" ]]; then
             pr_argument="prNumber=$PR_NUMBER"
           else
-            pr_argument="$ENVIRONMENT"
+            pr_argument="prNumber=$ENVIRONMENT"
           fi
 
           source infrastructure/environments/$ENVIRONMENT/variables.sh