Unable to update conda

My version of conda installed in ubuntu 22.04.3 LTS is 4.12.0 and Phyton 3.9.12.final0

I try to update conda with: “conda update conda” or with conda update -n base -c defaults conda and always receive the same message:

"Collecting package metadata (current_repodata.json): done
Solving environment: done

==> WARNING: A newer version of conda exists. <==
current version: 4.12.0
latest version: 23.10.0

Please update conda by running

$ conda update -n base -c defaults conda

All requested packages already installed."