If you are using the Google repository to update your Chrome it doesn’t update anymore with
apt-get due to security reasons.
Reading package lists... Done E: Repository 'http://dl.google.com/linux/chrome/deb stable Release' changed its 'Origin' value from 'Google, Inc.' to 'Google LLC' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
The solution is fast. Just run
sudo apt update
apt and not
apt-get. And just accept the change.
Do you want to accept these changes and continue updating from this repository? [y/N]
Then just use again
sudo apt-get update and
sudo apt-get upgrade