Fix SDK license types (#10273)

sdk.d.ts

@@ -3,7 +3,7 @@
  * Types for Simple Icons SDK.
  */
 
-import type { License } from './types';
+import type { CustomLicense, SPDXLicense } from './types';
 
 /**
  * The data for a third-party extension.
@@ -55,7 +55,7 @@ export type IconData = {
   source: string;
   slug?: string;
   guidelines?: string;
-  license?: License;
+  license?: Omit<SPDXLicense, 'url'> | CustomLicense;
   aliases?: Aliases;
 };
 

types.d.ts

@@ -5,12 +5,12 @@
  */
 export type License = SPDXLicense | CustomLicense;
 
-type SPDXLicense = {
+export type SPDXLicense = {
   type: string;
-  url?: string;
+  url: string;
 };
 
-type CustomLicense = {
+export type CustomLicense = {
   type: 'custom';
   url: string;
 };