increase timeout to accommodate npm

`npm ci` takes awhile to run and sometimes deployment fails with the default timeout of `300`. This doubles the default timeout to give more headroom.

deploy.php

@@ -13,6 +13,7 @@
 set('repository', 'https://github.com/UMN-LATIS/ChimeIn2.0.git');
 
 set('keep_releases', 5);
+set('default_timeout', 600);
 
 add('shared_files', []);
 add('shared_dirs', []);