add single-nominator-pool-r2 code hash

Author: igroman787

mytoncore/mytoncore.py

@@ -533,6 +533,7 @@ def GetVersionFromCodeHash(self, inputHash):
 		arr["hv1"] = "fc8e48ed7f9654ba76757f52cc6031b2214c02fab9e429ffa0340f5575f9f29c"
 		arr["pool"] = "399838da9489139680e90fd237382e96ba771fdf6ea27eb7d513965b355038b4"
 		arr["spool"] = "fc2ae44bcaedfa357d0091769aabbac824e1c28f14cc180c0b52a57d83d29054"
+		arr["spool_r2"] = "42bea8fea43bf803c652411976eb2981b9bdb10da84eb788a63ea7a01f2a044d"
 		for version, hash in arr.items():
 			if hash == inputHash:
 				return version