Solution 1:

Disable that source for the moment and try again.

Check /etc/apt/sources.list.d and /etc/apt/sources.list. Comment that source out with a hash sign # and run sudo apt update again.

This https://gitlab.com/paulcarroty/vscodium-deb-rpm-repo/raw/repos/debs/ does not exist (404 error). https://gitlab.com/paulcarroty/vscodium-deb-rpm-repo does, and it contains instructions how to set up that apt source.