Update to use fast instead of average

Author: Bojan131

dkg/providers/blockchain/async_blockchain.py

@@ -185,8 +185,8 @@ async def fetch_gas_price(oracle_url: str) -> Wei | None:
 
                         if "result" in data:
                             return int(data["result"], 16)
-                        elif "average" in data:
-                            return self.w3.to_wei(data["average"], "gwei")
+                        elif "fast" in data:
+                            return self.w3.to_wei(data["fast"], "gwei")
                         else:
                             return None
             except Exception:

dkg/providers/blockchain/blockchain.py

@@ -170,8 +170,8 @@ def fetch_gas_price(oracle_url: str) -> Wei | None:
 
                 if "result" in data:
                     return int(data["result"], 16)
-                elif "average" in data:
-                    return self.w3.to_wei(data["average"], "gwei")
+                elif "fast" in data:
+                    return self.w3.to_wei(data["fast"], "gwei")
                 else:
                     return None
             except Exception: