For all who just want to install vulkan-sdk on Ubuntu 22.04 like I wanted, getting the error
The following packages have unmet dependencies:
vulkancapsviewer : Depends: qt5-default but it is not installable
These instructions helped in my case: https://vulkan.lunarg.com/doc/sdk/1.3.236.0/linux/getting_started_ubuntu.html
wget -qO- https://packages.lunarg.com/lunarg-signing-key-pub.asc | sudo tee /etc/apt/trusted.gpg.d/lunarg.asc
sudo wget -qO /etc/apt/sources.list.d/lunarg-vulkan-jammy.list http://packages.lunarg.com/vulkan/lunarg-vulkan-jammy.list
sudo apt update
sudo apt install vulkan-sdk