Automatically merged updates to draft EIP(s) 1474 (#2433)

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EIPS/eip-1474.md

@@ -46,6 +46,7 @@ If an Ethereum RPC method encounters an error, the `error` member included on th
 |-32003|Transaction rejected|Transaction creation failed|non-standard|
 |-32004|Method not supported|Method is not implemented|non-standard|
 |-32005|Limit exceeded|Request exceeds defined limit|non-standard|
+|-32006|JSON-RPC version not supported|Version of JSON-RPC protocol is not supported|non-standard|
 
 Example error response: