Klarna Checkout Won't Install on Magento 2.4.4

If you’re using the Klarna Checkout package (klarna/m2-checkout) then when you
upgrade to Magento 2.4.4 it won’t install due to a conflict with Monolog
versions. As per a merchant email a short while ago, you need to change over to
the new klarna/m2-checkout package.

You can switch over using:

composer remove klarna/m2-checkout
composer require klarna/m2-klarna