Download Twitch CLI 1.1.21

Special thanks to @lleadbet, @BarryCarlyon, @SputNikPlop, @alanwsmith, and @kenranunderscore for the PRs, contributions, and code reviews, and to @frifugio, @MrSniFo, and @BarryCarlyon for the bug reports and feature requests.

In this release:
- Fixed JSON response data formatting issue with PATCH /mock/entitlements/drops
- Fixed issue in twitch event trigger channel.subscribe where is_gift will be incorrectly set to false despite the Gifter's User ID being set.
- Fixed missing charity description and website fields in channel.charity_campaign.start and channel.charity_campaign.stop mock events
- Fixed typo in help description for --scopes flag on twitch token
- Fixed EventSub WebSocket server showing Client ID instead of Subscription ID when calling GET /eventsub/subscriptions
- Fixed EventSub WebSocket server to only show subscriptions disabled less than 1 hour ago when calling GET /eventsub/subscriptions
- Added --ban-start and --ban-end flags to twitch event trigger to affect the ban start and end fields for channel.ban
- Added -v flag to twitch api to display header information for the HTTP request and response, similar to curl
- Added --revoke flag for twitch token
- Added missing portions of twitch token documentation
- Changed mock EventSub to only support IPv4 in callback validation/checking
- Changed EventSub WebSocket server to set a new subscription's created_at to be the server's start when not in strict mode, or to be the creation of the subscription when in strict mode
- Changed /mock/charity/donations to show target_amount instead of amount (#274)
- Fixed errors with tests that were causing incorrect failures on WSL and Github Actions (Windows only)