fix header_to_token test lint

Author: thibmeu

test/pub_verif_token.test.ts

@@ -105,7 +105,8 @@ test('header_to_token returns an Authorization header value', async () => {
     vi.stubGlobal(
         'fetch',
         vi.fn(async (input: RequestInfo | URL, init?: RequestInit) => {
-            const url = input.toString();
+            const url =
+                input instanceof Request ? input.url : input instanceof URL ? input.href : input;
             if (url === `https://${tokChl.issuerName}/.well-known/private-token-issuer-directory`) {
                 return new Response(
                     JSON.stringify({