refactor: use the coorect format for the string datetime

Author: serapieTuyishime

__mocks__/fixtures/bounty.ts

@@ -34,8 +34,8 @@ export const mockBounty: Bounty = {
   image: undefined,
   id: "",
   ref: "",
-  created_at: "",
-  updated_at: "",
+  created_at: new Date().toISOString(),
+  updated_at: new Date().toISOString(),
   icon: "",
   active: false,
   colors,

__mocks__/fixtures/challenge.ts

@@ -125,7 +125,7 @@ export const mockTeamMember: TeamMember = {
 export const mockTeam: Team = {
   challenge: challenge,
   challenge_ref: "challenge ref",
-  created_at: "created at",
+  created_at: new Date().toISOString(),
   id: "id",
   locked: true,
   name: "Master",
@@ -135,7 +135,7 @@ export const mockTeam: Team = {
   members: [mockTeamMember],
   ref: "",
   timestamp: "",
-  updated_at: "",
+  updated_at: new Date().toISOString(),
 };
 
 export const mockFeedback: Feedback = {

__mocks__/fixtures/course.ts

@@ -14,8 +14,8 @@ export const mockCertificateData = {
 export const Rubric = {
     id: "id",
     ref: "rubric references",
-    created_at: "Wednesday",
-    updated_at: "Thursday",
+    created_at: new Date().toISOString(),
+    updated_at: new Date().toISOString(),
     challenge: "Challenge",
     text: "Challenge text",
     type: "challenge type",

__mocks__/fixtures/scoreboard.ts

@@ -5,7 +5,7 @@ import { mockUser } from "./user";
 export const mockScoreboard: Scoreboard = {
     id: "id",
     ref: "ref",
-    created_at: "Monday",
+    created_at: new Date().toISOString(),
     updated_at: "February",
     score: 3,
     user_id: "user_id",