Apply fixes from code review

Author: swissspidy

src/Core_Command.php

@@ -1562,7 +1562,7 @@ private function get_updates( $assoc_args ) {
 	/**
 	 * Sets or clears the version check error property based on an HTTP response.
 	 *
-	 * @param array|\WP_Error $response The HTTP response (WP_Error, array, or other).
+	 * @param mixed|\WP_Error $response The HTTP response (WP_Error, array, or other).
 	 *
 	 * @phpstan-param HTTP_Response|WP_Error $response
 	 */

src/WP_CLI/Core/CoreUpgrader.php

@@ -93,11 +93,11 @@ function () use ( $temp ) {
 			}
 		);
 
+		$cache = WP_CLI::get_cache();
+
 		/**
-		 * @var array{wpcli_core_update_obj: object{locale: string}} $GLOBALS
+		 * @var object{locale: string} $update
 		 */
-
-		$cache     = WP_CLI::get_cache();
 		$update    = $GLOBALS['wpcli_core_update_obj'];
 		$cache_key = "core/{$filename}-{$update->locale}.{$extension}";