Fixed donor address check

ref #105

src/tests/donors/donor_update.spec.ts

@@ -60,7 +60,7 @@ describe('Update donor without address but receiptNeeded=true should fail', () =
     it('creating a new donor with only needed params should return 200', async () => {
         const res2 = await axios.post(base + '/api/donors', {
             "firstname": "first",
-            "lastname": "last",
+            "lastname": "testtest",
         }, axios_config);
         added_donor = res2.data;
         expect(res2.status).toEqual(200);