Update tests to make more reliable

- hope you are ok with this @roschaefer, it was failing locally and I guess it passed the build because half the time the array is returned in the order expected while half the time not.

backend/src/schema/resolvers/rewards.spec.js

@@ -106,10 +106,11 @@ describe('rewards', () => {
           id: 'indiegogo_en_racoon',
           icon: '/img/badges/indiegogo_en_racoon.svg',
         })
+        const badges = [{ id: 'indiegogo_en_racoon' }, { id: 'indiegogo_en_rhino' }]
         const expected = {
           reward: {
             id: 'u1',
-            badges: [{ id: 'indiegogo_en_racoon' }, { id: 'indiegogo_en_rhino' }],
+            badges: expect.arrayContaining(badges),
           },
         }
         await client.request(mutation, variables)