jxu10

fix: use `home_path()` in self-update location check

9

Since `install.sh` installs to `$PIXI_HOME/bin/pixi`, I think it's reasonable for `pixi self-update` to match the installer's logic for determining the "default pixi binary path".

Fixes #105

bug(pypi): lock file always outdated with dependency-overrides

1

### Checks - [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the [latest version](https://github.com/prefix-dev/pixi/releases) of pixi, using...