Add: Allow Unlicense/MIT license

[jjnicola]

What

Add: Allow Unlicense/MIT license

Why

Required by walkdir

Licenses
  Warning: 
  The validity of the licenses of the dependencies below could not be determined. Ensure that they are valid SPDX licenses:
  rust/Cargo.lock » walkdir@2.4.0 – License: Unlicense/MIT
  Error: Dependency review could not detect the validity of all licenses.

References

Checklist

• Tests

[github-actions]

Conventional Commits Report

Type	Number
Added	1

🚀 Conventional commits found.

[y0urself]

@jjnicola I don't think this is in the correct format and can not be recognized by the action ...

[wiegandm]

As far as I can tell, https://github.com/BurntSushi/walkdir can be licensed under either Unlicense or MIT (see https://github.com/BurntSushi/walkdir/blob/master/README.md?plain=1#L11 ), both of which are already in the list.

[wiegandm]

So the problem is rather that walkdir uses a non-SPDX-compliant identifier for its license. The correct identifier should be Unlicense OR MIT.

[y0urself]

Correct! Nevertheless, this can not be "fixed" on our side!

[y0urself]

@jjnicola did you get approval for this license?

[y0urself]

@greenbone/scanner-maintainers is this still required? Did you get approval?

[nichtsfrei]

what approval? we still need that notation https://github.com/BurntSushi/walkdir/blob/master/Cargo.toml#L12 , yes.

It is fair to assume that the author doesn't seem to care about SPDX-compliant notations as there is a PR open since 2021:
BurntSushi/walkdir#155

[y0urself]

This will currently not work anyway, as logically connected licenses are not a thing anymore, see #1197