fix: replace deprecated setQueryArg() with set_query_arg() in `co…

…nnectedTaxonomies`

src/Type/Connection/Taxonomies.php

@@ -35,7 +35,7 @@ public static function register_connections() {
 						return null;
 					}
 					$resolver = new TaxonomyConnectionResolver( $source, $args, $context, $info );
-					$resolver->setQueryArg( 'in', $source->taxonomies );
+					$resolver->set_query_arg( 'in', $source->taxonomies );
 					return $resolver->get_connection();
 				},
 			]