As you may know, WooCommerce releases new versions of the plugin every few weeks. This means that some of the template files we use in our theme might show up for you as outdated. We do update all the template files when we release new versions of the theme.
For now, you can:
Step 1 － Ignore the outdated message - note that most of the WooCommerce updates do not change anything critical, so it should not have an impact on the theme's functionality.
In case you already updated the WooCommerce plugin, go through the Checkout process to make sure everything is working fine. If everything appears normal, and in most cases, it will, you can feel free to ignore the 'out of date' warning.
Step 2 － If there is some kind of a glitch, you will need to downgrade WooCommerce to a version that is compatible with our theme. You can check the exact WooCommerce version on the theme page.
You can also refer to this article for a detailed explanation on how to update old template files.