anki hardcoded python version

In [anki](https://slackbuilds.org/repository/15.0/desktop/anki/) slackbuild python version 3.9 is hardcoded, which is why it fails on -current as it uses python 3.11:

```bash
find $PKG/usr/bin $PKG/usr/lib/python3.9/site-packages \
  -mindepth 1 -maxdepth 1 \
  -not -name "_aqt*" \
  -not -name "aqt*" \
  -not -name "anki*" \
  -execdir rm -rf '{}' \+
```