debchange still wants to build for bullseye-backports after upgrade to Bookworm

["Alexander V. Makartsev" <avbetev@gmail.com>]

    Hello.
    
    I've successfully upgraded to Bookworm recently and trying to build
    a backport package.
    But the usual "$ debchange --bpo"
    still wants to build for "bullseye-backports" and modifies
    "debian/changelog" by adding "~bpo11+1" and "bullseye-backports;"
    instead of expected "~bpo12+1" and "bookworm-backports;"
    Is there anything to check on my system or this is a bug in "dch"
    and/or "devscripts" package?
    
> $ dch --help | grep -iEA2 " 
>         --bpo"
>         --bpo
>                Increment the Debian release
>         number for a backports upload
>                to "bullseye-backports"
>     
> $ uname -a
>       Linux hostname 6.1.0-9-amd64 #1 SMP
>         PREEMPT_DYNAMIC Debian 6.1.27-1 (2023-05-08) x86_64 GNU/Linux
>     
> $ cat /etc/os-release | grep -iE
>         "_ID|_CODE"
>       VERSION_ID="12"
>       VERSION_CODENAME=bookworm
>     
> $ apt-show-versions devscripts
>       devscripts:all not installed
>       devscripts:amd64/bookworm 2.23.4 uptodate
>       devscripts:i386 not installed
>

--
With kindest regards, Alexander.

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