Bump node serialization code for MoveExpr due to subsequent commit landing.

utils/gyb_syntax_support/NodeSerializationCodes.py

@@ -31,7 +31,6 @@ SYNTAX_NODE_SERIALIZATION_CODES = {
     'PoundColumnExpr': 26,
     'TryExpr': 27,
     'AwaitExpr': 249,
-    'MoveExpr': 267,
     'IdentifierExpr': 28,
     'SuperRefExpr': 29,
     'NilLiteralExpr': 30,
@@ -271,6 +270,7 @@ SYNTAX_NODE_SERIALIZATION_CODES = {
     'GarbageNodes' : 266,
     'LabeledStmt': 267,
     'InfixOperatorExpr': 268,
+    'MoveExpr': 269,
 }