fix: sync ibm_catalog keys (#579)

Author: shemau

ibm_catalog.json

@@ -276,7 +276,7 @@
               ]
             },
             {
-              "key": "skip_iam_authorization_policy"
+              "key": "skip_pg_kms_auth_policy"
             },
             {
               "key": "key_ring_name"
@@ -290,6 +290,12 @@
             {
               "key": "backup_crn"
             },
+            {
+              "key": "existing_backup_kms_key_crn"
+            },
+            {
+              "key": "use_default_backup_encryption_key"
+            },
             {
               "key": "remote_leader_crn"
             }