fix values_list fields order

[Abdeldjalil-H]

Fix fields order for ValuesListQuery

ValuesListQuery return wrong order list when the number of fields is greater than 10.

Description

Starting from python 3.6, the dicts preserve the order of insertion. So there is no need for sorted method. Moreover, this gives wrong results if you use more than 10 fields, because (10, field) will come before (2, field).

Motivation and Context

How Has This Been Tested?

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added the changelog accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[long2ice]

Thanks! Please update changelog.

[long2ice]

Please again. Thanks!