And if you had bothered to read the Release Notes for bookworm: It's in there [2]. Also you are instructed that only upgrades from bullseye are supported, and to upgrade to bullseye first if you are running an older version.
Nobody else to blame for your fall.
[1] https://www.debian.org/releases/sarge/i386/release-notes/ch-... [2] https://www.debian.org/releases/stable/amd64/release-notes/c...