fix chutney in CI
I wasn't able to locate libssl1 in Bookworm, I suspect only libssl3 is provided by Debian. While rust:latest
still uses Bullseye, I think staying on Bullseye for chutney too is probably better.
Also add a check to verify if Arti dies early during chutney tests, and rename a var otherwise shellcheck thinks we think two things alias where they don't because of subshells.