Use fixed value in test

Random value could interfere with other assertions.

Author: acogoluegnes

src/test/java/com/rabbitmq/client/amqp/impl/SourceFiltersTest.java

@@ -363,7 +363,7 @@ void filterExpressionApplicationProperties() {
     int messageCount = 10;
     UUID uuid = UUID.randomUUID();
     long now = System.currentTimeMillis();
-    byte[] binary = binaryArbitrary.sample();
+    byte[] binary = "hello".getBytes(UTF_8);
     publish(messageCount, msg -> msg.property("foo", true));
     publish(messageCount, msg -> msg.property("foo", 42));
     publish(messageCount, msg -> msg.property("foo", 42.1));