test(ssi): use mockResolvedValue

Signed-off-by: Berend Sliedrecht <berend@animo.id>

apps/ssi-abstraction/src/agent/__tests__/agent.controller.spec.ts

@@ -24,7 +24,7 @@ describe('AgentController', () => {
       const result = { id: 'test' };
       jest
         .spyOn(agentService, 'getPublicDid')
-        .mockImplementation(() => Promise.resolve(result));
+        .mockResolvedValue(result)
 
       expect(await agentController.publicDid()).toBe(result);
     });