Not forwarding AccessToken to sub-commands for Repo Team Permissions

[HowardWolosky]

Description

The Get/Set/Remove-GitHubRepositoryTeamPermission functions will sometimes call Get-GitHubTeam to get missing information. In those instances, they weren't passing along the AccessToken parameter if it had been provided by the user. In those scenarios, the result will be a 404 since the Get-GitHubTeam call won't have the same auth permissions as the core API being called.

Issues Fixed

Fixes #353

Checklist

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