TASK SB Use correct (int) endpoint for EliD in preprod environment.

Author: acerathereinspirative-nhs-nvir

infrastructure/environments/preprod/locals.tf

@@ -42,7 +42,7 @@ locals {
 
     MAX_SESSION_AGE_MINUTES = 59
 
-    ELIGIBILITY_API_ENDPOINT = "https://sandbox.api.service.nhs.uk/"
+    ELIGIBILITY_API_ENDPOINT = "https://int.api.service.nhs.uk/"
     IS_APIM_AUTH_ENABLED     = true
     APIM_AUTH_URL            = "https://int.api.service.nhs.uk/oauth2/token"
     APIM_KEY_ID              = "test-1"