register spdx lib as ES Module, start converting call sites to use new spdx pkg - TODO: update tests

src/utils.ts

@@ -1,6 +1,5 @@
 import * as core from '@actions/core'
 import {Octokit} from 'octokit'
-import spdxParse from 'spdx-expression-parse'
 import {Changes} from './schemas'
 
 export function groupDependenciesByManifest(
@@ -34,15 +33,6 @@ export function renderUrl(url: string | null, text: string): string {
   }
 }
 
-export function isSPDXValid(license: string): boolean {
-  try {
-    spdxParse(license)
-    return true
-  } catch (_) {
-    return false
-  }
-}
-
 function isEnterprise(): boolean {
   const serverUrl = new URL(
     process.env['GITHUB_SERVER_URL'] ?? 'https://github.com'