message: qa: fix p2p_invalid_messages on macOS
diff: @@ -66,7 +66,7 @@ class InvalidMessagesTest(BitcoinTestFramework):
  msg_at_size = msg_unrecognized("b" * valid_data_limit)
  assert len(msg_at_size.serialize()) == msg_limit
  - with node.assert_memory_usage_stable(perc_increase_allowed=0.03):
  + with node.assert_memory_usage_stable(perc_increase_allowed=0.5):
  self.log.info(
  "Sending a bunch of large, junk messages to test "
  "memory exhaustion. May take a bit...")
  