Expect var_dump to trigger a warning, not an error

Currently, all functions in `WordPress.PHP.DevelopmentFunctions` are warnings, not errors

Author: nickdaugherty

ruleset_test.php

@@ -27,7 +27,6 @@
 		24  => 1,
 		40  => 1,
 		43  => 1,
-		45  => 1,
 		48  => 1,
 		49  => 1,
 		53  => 1,
@@ -60,6 +59,7 @@
 		28  => 1,
 		36  => 1,
 		44  => 1,
+		45  => 1,
 		65  => 1,
 		70  => 1,
 		85  => 1,
@@ -265,4 +265,3 @@ private function error_warning_message( $expected, $type, $number, $line ) {
 } else {
 	exit( 1 );
 }
-