pivot sample not working on DevOps server

[rmadani]

Hi,

We are currently using Azure DevOps server 2020. The pivot sample fails on the following call:
const projects = await getClient(CoreRestClient).getProjects();

The error is:
The requested REST API version of 7.2 is out of range for this server. The latest REST API version this server supports is 6.1.

Is there any way to change the api-version in this call?

thank you in advance,
~Reza