Here's how to upgrade to the latest Ubuntu 23.10 release:
https://itsfoss.com/upgrade-ubuntu-to-newer-version/
How to Upgrade to Ubuntu 23.10 Right Now
Ubuntu 23.10 'Mantic Minotaur' is almost here. If you are using Ubuntu 22.04 or 23.04, here's how you can upgrade to Ubuntu 23.10 right away.Abhishek Prakash (It's FOSS)