I might have missed the reasoning if it is explained somewhere, but I'm just going to ask instead of looking around more.

The Debian base for (at least) TruffleRuby is Debian 10 (Buster) which is EOL, and only supported by ELTS. Is there a reason this is used for the Debian images, and if possible can it be updated to oldstable (11 Bullseye) or even stable (12 Bookworm)?