Not able to update python and conda to latest version using anaconda prompt

Product Help Anaconda & Miniconda
1

I have done conda update conda ,it shows
Collecting package metadata (current_repodata.json): done
Solving environment: done

==> WARNING: A newer version of conda exists. <==
current version: 4.10.3
latest version: 23.7.3

Please update conda by running

$ conda update -n base -c defaults conda

then also i am not able to update
I have also tried updating python but python not getting updated

I have also tried using following commands:
conda update --all
conda update python

for this command,
conda install python=3.11.5 conda=23.7.2
it shows:
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.

PackagesNotFoundError: The following packages are not available from current channels:

  • python=3.11.5

Current channels:

//FEW CHANNELS ARE LISTED

To search for alternate channels that may provide the conda package you’re
looking for, navigate to

https://anaconda.org

and use the search bar at the top of the page.