Fix newly reported PHPStan errors

Author: swissspidy

composer.json

@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "wp-cli/wp-cli": "^2.12"
+        "wp-cli/wp-cli": "^2.13"
     },
     "require-dev": {
         "wp-cli/entity-command": "^1.3 || ^2",

src/Rewrite_Command.php

@@ -166,6 +166,7 @@ public function structure( $args, $assoc_args ) {
 
 		/**
 		 * @var object{stdout: string, stderr: string, return_code: int} $process_run
+		 * @phpstan-ignore varTag.type
 		 */
 		$process_run = WP_CLI::runcommand( $cmd );
 		if ( ! empty( $process_run->stderr ) ) {