Update AddTeamsUser.cs

[YuriySamorodov]

Add-PnPTeamUser should treat Channel param as optional

Before creating a pull request, make sure that you have read the contribution file located at

https://github.com/pnp/powerShell/blob/dev/CONTRIBUTING.md

Type

• Bug Fix
• New Feature
• Sample

Related Issues?

Fixes #1952

What is in this Pull Request ?

Changed the setting for Channel parameter so that Add-PnPTeamUser considers it as optional

Guidance

• You can delete this section when you are submitting the pull request.*
• Please update this PR information accordingly. We use this as part of our release notes in monthly communications.
• Please target your PR to Dev branch. If you do not target the Dev branch we will not accept this PR.

[gautamdsheth]

Good catch @YuriySamorodov !!
Thanks for fixing this , much appreciated, merged will be available in tomorrow's nightly :)