* chore: stop using go-homedir
The `github.com/mitchellh/go-homedir` repo is archived, no longer needed, and no longer maintained.
- `homedir.Dir` is replaced by the stdlib `os.UserHomeDir`
- `homedir.Expand` is replaced by fsutil.ExpandHome` in the `github.com/ipfs/kubo/misc/fsutil` package.
Additional functionality, such as `DirWritable` and `FileExists` was moved into or included in the `github.com/ipfs/kubo/misc/fsutil` package.
(cherry picked from commit 4009ad3e5a)
