Regenerate schemas

(cherry picked from commit aa1a7f2)

Author: chipshort

contracts/reflect/schema/raw/response_to_sub_msg_result.json

@@ -4,13 +4,13 @@
   "description": "The result object returned to `reply`. We always get the ID from the submessage back and then must handle success and error cases ourselves.",
   "type": "object",
   "required": [
-    "gas_used",
     "id",
     "result"
   ],
   "properties": {
     "gas_used": {
-      "description": "The amount of gas used by the submessage, measured in [Cosmos SDK gas](https://github.com/CosmWasm/cosmwasm/blob/main/docs/GAS.md).",
+      "description": "The amount of gas used by the submessage, measured in [Cosmos SDK gas](https://github.com/CosmWasm/cosmwasm/blob/main/docs/GAS.md).\n\nThis only contains a useful value on chains running CosmWasm 2.0 or higher. On older chains, this field is always 0.",
+      "default": 0,
       "type": "integer",
       "format": "uint64",
       "minimum": 0.0

contracts/reflect/schema/reflect.json

@@ -2006,13 +2006,13 @@
       "description": "The result object returned to `reply`. We always get the ID from the submessage back and then must handle success and error cases ourselves.",
       "type": "object",
       "required": [
-        "gas_used",
         "id",
         "result"
       ],
       "properties": {
         "gas_used": {
-          "description": "The amount of gas used by the submessage, measured in [Cosmos SDK gas](https://github.com/CosmWasm/cosmwasm/blob/main/docs/GAS.md).",
+          "description": "The amount of gas used by the submessage, measured in [Cosmos SDK gas](https://github.com/CosmWasm/cosmwasm/blob/main/docs/GAS.md).\n\nThis only contains a useful value on chains running CosmWasm 2.0 or higher. On older chains, this field is always 0.",
+          "default": 0,
           "type": "integer",
           "format": "uint64",
           "minimum": 0.0