fix(deps): update terraform restapi to latest for deployable modules / architectures (#150)

Author: terraform-ibm-modules-ops

solutions/banking/version.tf

@@ -14,7 +14,7 @@ terraform {
     }
     restapi = {
       source  = "Mastercard/restapi"
-      version = ">= 1.19.1"
+      version = ">= 1.20.0"
     }
     shell = {
       source  = "scottwinkler/shell"