adapt test to new gas limit

AlphaWalletTests/Transfer/Types/GasLimitConfigurationTests.swift

@@ -9,6 +9,6 @@ class GasLimitConfigurationTests: XCTestCase {
     func testDefault() {
         XCTAssertEqual(BigInt(90000), GasLimitConfiguration.default)
         XCTAssertEqual(BigInt(21000), GasLimitConfiguration.min)
-        XCTAssertEqual(BigInt(300000), GasLimitConfiguration.max)
+        XCTAssertEqual(BigInt(4712388), GasLimitConfiguration.max)
     }
 }