Enable https in prod and add domain name (#5343)

Domain is: nofos.simpler.grants.gov

## Summary

Adds a domain and turns on https for nofos prod.

Related PR for nofos-dev:
#5261

Author: pcraig3

infra/nofos/app-config/prod.tf

@@ -5,8 +5,8 @@ module "prod_config" {
   default_region = module.project_config.default_region
   environment    = "prod"
   network_name   = "prod"
-  domain_name    = null
-  enable_https   = false
+  domain_name    = "nofos.simpler.grants.gov"
+  enable_https   = true
 
   instance_desired_instance_count = 1
   instance_scaling_min_capacity   = 1