Thanks for using Bitnami. If you are using AWS Lightsail, please note the AWS team in charge of updating the images available in that marketplace need some time to do it. We already released the new images, but we are waiting on them to update it on their side. You can use a different image from the AWS marketplaces (regular EC2 instances, not Lightsail), or stop and disable the services in your current installation, plus manually installing the latest Bitnami WordPress stack installer on your Lightsail instance.
You can get more information about it in the next guide
Please, if you find any issue following the steps above, please open a new thread on the forum so we don't mix different topics here.