Briefly noted: If a 13.2 jail is no longer available on a 13.0 TrueNAS, this can be circumvented with a little trick via the shell.
iocage fetch -s http://ftp-archive.freebsd.org -d /pub/FreeBSD-Archive/old-releases/amd64/
After the download, TrueNAS will still not show the old release on the website, but a new 13.2 jail can still be created manually:
iocage create -b -n "vaultwarden" -r 13.2-RELEASE vnet="on" bpf="on" dhcp="on"
Voilá
The BSDBox is my IT playground. Professional services around network, server and structure building I offer with my company computing-competence. If you find this content valuable and useful, I welcome feedback via matrix, email or follow me on Mastodon.