fs: update afero to v1.8.1

[mewmew]

In afero v1.6.0 the FromIOFS type was added (see afero.FromIOFS godoc),
which facilitates interopability with the fs.FS interface of the Go standard library.

To support afero.FromIOFS in eggos, afero was updated
to the latest version.

Note: the afero.FS interface has been updated since v1.4.0
to include the Chown method. As such, the logger, mount
and smb file system types were updated to include the Chown
method.

In particular, the fs/logger.logger, fs/mount.MountableFs and
fs/stripprefix.fs file system types have been updated to include
Chown.

However, as of yet, a stub implementation of Chown exist for the
smb.Fs file system type.

[mewmew]

The CI build errors have been fixed now. The only thing left is to figure out how to handle smb.Chown:

From https://github.com/icexin/eggos/pull/103/files#diff-26b2456dc89ed2b4b08c32c9291200852506c7b778997d3f90d643429109b294R86:

// Chown changes the uid and gid of the named file.
func (f *Fs) Chown(name string, uid, gid int) error {
	panic("not implemented") // TODO: figure out how to implement.
}

Edit: does anyone have an idea of how to implement Chown for smb? I don't quite know how it is supposed to be handled.

[icexin]

Edit: does anyone have an idea of how to implement Chown for smb? I don't quite know how it is supposed to be handled.

There seems to be no chown semantics in the interface of the smb package. This place can simply report an error.

[mewmew]

There seems to be no chown semantics in the interface of the smb package. This place can simply report an error.

You're right. From https://pkg.go.dev/github.com/hirochachacha/go-smb2#section-readme:

This package doesn't support CAP_UNIX extension.

The CAP_UNIX would be required to handle uid/guid from what I can tell.

As of commit 00ae224, this PR is ready for review (and merge).

Cheers,
Robin