Upgrade to Debian 11 failing : Raspberry Pi 3B+ / dh-autoreconf python3-gi issues

Running apt upgrade debhelper raises:

Les paquets suivants contiennent des dépendances non satisfaites :
libayatana-appindicator3-1 : Casse: libappindicator3-1 (< 22.04)

I removed it, it removed clipit libayatana-appindicator3-1 packages.
Doesn’t change the issue.

And then

aptitude why  debhelper
   equivs Dépend debhelper

and

yunohost Dépend equivs
debhelper Dépend dh-autoreconf (>= 17~)

I don’t know how to solve this… I can’t fix dh-autoreconf, nor uninstall Yunohost…