updated Discord backend to work with PS 5.1, 6.2.3 and 7

[scrthq]

Description

• Discord Backend
  • Conditionally added Depth parameter to ConvertFrom-Json calls for 5.1 compatibility
  • Added member pagination to LoadUsers()
  • Converted unicode emoji conversions in _ResolveEmoji() to work with 5.1 due to unicode shortcut breaking AddReaction when not in PS Core
  • Increased buffer size in response to message chunking resulting in improper formatting
  • Added failure message logging to ReadReceiveJob() to surface errors from the job
• build.ps1
  • Added ValidateSet for the Task parameter to tab-complete available Tasks

Motivation and Context

I reeeeeeally wanted the Discord backend to work. Thanks for your work on this @devblackops @michaeltlombardi !! ❤️

How Has This Been Tested?

Tested in PowerShell 5.1, 6.2.3 and 7.0.0.0-preview.4 on Windows 10 Professional

Screenshots (if appropriate):

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

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

[scrthq]

Added the suppression rule in a new commit

Considering these are being compiled onto a single PSM1 though, is the single instance on the Slack side enough to cover or is PSSA being ran against each file and that's not applicable in that case?