Node 14 is the oldest release which is not end-of-life: https://github.com/nodejs/release#release-schedule . It's expected to be maintained until 2023-04. We're currently running on node 10 which has been unmaintained since 2021.
It looks like we'll need to upgrade the servers to Bullseye (debian-stable) in order to get this package: https://apt.wikimedia.org/wikimedia/dists/bullseye-wikimedia/thirdparty/