Switch from `expect.objectContaining` to `toMatchObject`

Per reviewer feedback

spec/frontend/members/utils_spec.js

@@ -267,15 +267,13 @@ describe('Members Utils', () => {
     });
 
     it('correctly parses the data attribute', () => {
-      expect(parseDataAttributes(el)).toEqual(
-        expect.objectContaining({
+      expect(parseDataAttributes(el)).toMatchObject({
         members,
         pagination,
         sourceId: 234,
         canManageMembers: true,
         memberPath: '/groups/foo-bar/-/group_members/:id',
-        }),
-      );
+      });
     });
   });