rename random -> prevRandao

Author: tersec

web3/engine_api_types.nim

@@ -10,7 +10,7 @@ type
   # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#payloadattributesv1
   PayloadAttributesV1* = object
     timestamp*: Quantity
-    random*: FixedBytes[32]
+    prevRandao*: FixedBytes[32]
     suggestedFeeRecipient*: Address
 
   # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#payloadstatusv1

web3/ethtypes.nim

@@ -210,7 +210,7 @@ type
     stateRoot*: BlockHash
     receiptsRoot*: BlockHash
     logsBloom*: FixedBytes[256]
-    random*: FixedBytes[32]
+    prevRandao*: FixedBytes[32]
     blockNumber*: Quantity
     gasLimit*: Quantity
     gasUsed*: Quantity