Add missing audit log action types (212, 213) for AudiLogAction

[owocado]

Summary

This PR add two new missing audit log events:

• PIN_PERMISSION_MIGRATION_COMPLETE - type 212
  This audit log object looks like:

  {
    "id": "1441484387261747281",
    "action_type": 212,
    "user_id": "306810730055729152",
    "target_id": null
  }

• BYPASS_SLOWMODE_PERMISSION_MIGRATION_COMPLETE - type 213
  This audit log object looks like:

  {
    "user_id": "306810730055729152",
    "target_id": null,
    "id": "1442785290375663707",
    "action_type": 213,
    "guild_id": "129315212005888060"
  }

These will be helpful in on_audit_log_entry_create event dispatched by d.py

upstream open PR: discord/discord-api-docs#8005
(keeping this PR in draft until upstream is merged)

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, ...)