Just found out a solution that works for me.
Trying to install it on Debian release called “Trixie” .
It seems there is no package for it yet, so I changed the entry in the file “hashicorp.list” in “/etc/apt/sources.list/” from “trixie” to “bookworm” and it installed the package all right!.
PS: Bookworm is the previous Debian release, while Trixie is the current one.