Switch to check URL v2 first

Author: MarcoJmz

src/Package_Command.php

@@ -866,14 +866,14 @@ private function get_package_by_shortened_identifier( $package_name, $insecure =
 	 * Gets the correct packagist URL.
 	 */
 	private function get_packagist_url( $package_name, $options ) {
-		$url      = "https://repo.packagist.org/p/{$package_name}.json";
+		$url      = "https://repo.packagist.org/p2/{$package_name}.json";
 		$response = Utils\http_request( 'GET', $url, null, [], $options );
 
 		if ( 20 === (int) substr( $response->status_code, 0, 2 ) ) {
 			return $url;
 		}
 
-		return "https://repo.packagist.org/p2/{$package_name}.json";
+		return "https://repo.packagist.org/p/{$package_name}.json";
 	}
 
 	/**