Migrate test from deprecated code

Author: garydgregory

src/test/java/org/apache/commons/io/input/ByteBufferCleanerTest.java

@@ -39,7 +39,7 @@ void testCleanEmpty() {
     @Test
     void testCleanFull() {
         final ByteBuffer buffer = ByteBuffer.allocateDirect(10);
-        buffer.put(RandomUtils.insecure().nextBytes(10), 0, 10);
+        buffer.put(RandomUtils.insecure().randomBytes(10), 0, 10);
         // There is no way verify that the buffer has been cleaned up, we are just verifying that
         // clean() doesn't blow up
         ByteBufferCleaner.clean(buffer);