Which line of my suggestion above includes this part?
Are you aware this selects the default value, which here:
is “No”, and which also explains why there is an “unresolvable conflict”?
Please stop trying to automate package updates. This will, at some point, break your installation.
Take it one step at a time.
Update the keyrings:
sudo pacman -S archlinux-keyring chaotic-keyring
then try again.