[BUG] action does fail with valid licenses like Unicode-3.0

[ailox]

Describe the bug
This action fails when adding a license like Unicode-3.0 into the allowed_licenses section.

To Reproduce
Steps to reproduce the behavior:

1. Add the dependency-review-action to a project
2. allow-licenses: "Unicode-3.0"
3. Trigger
4. See error: "Error: Invalid license(s) in allow-licenses: Unicode-3.0"

Expected behavior
License is allowed and can be used.

Action version
4.5.0 (latest as of today)

[ailox]

I used this primitive test to validate the solution:

import {expect, test} from '@jest/globals'
import * as spdx from '../src/spdx'

test('Unicode', async () => {
  expect(spdx.isValid('Unicode-3.0')).toEqual(true)
})