You should not have to do anything. Although, keeping Certbot current is always good practice.
When you request a cert you get a "leaf" cert and its related intermediate chain returned to you. You likely already use the "fullchain.pem" file in your Apache config. This includes your "leaf" cert and its intermediate certs.
Your next renewal will have a different intermediate cert in "fullchain.pem" (and also in "chain.pem" which you probably don't use or need).
No action is required on your part. Apache will use the file to output the current cert and chain.
See this related announcement
Especially this:
Most Let’s Encrypt Subscribers will not need to take any action in response to this change because ACME clients, like certbot , will automatically configure the new intermediates when certificates are renewed. The Subscribers who will be affected are those who currently pins intermediate certificates.