Can't install core20

I'm getting this error while trying to install microk8s:
```
error: cannot perform the following tasks:
- Ensure prerequisites for "microk8s" are available (cannot install snap base "core20": snap "core20" assumes unsupported features:
```

snapd2.61 (try to refresh snapd))

then tried to install core20:
```
error: cannot install "core20": snap "core20" assumes unsupported features: snapd2.61 (try to
refresh snapd)
```

System is a Debian 12 bookworm but I don't think it is OS related. Any help would be much appreciated.

No repository files, tests, or entry points are identified in the report. Start by reproducing the microk8s and core20 installation commands on Debian 12 and checking the installed snapd version; the issue is done when the reported unsupported-feature error is resolved or its compatibility cause is documented.

Written by the indexing model from the issue text.