Add GitHub Notifications to Discord

[earth2travis]

https://github.com/yeet-haus/site/settings/hooks

• [x] Site: Site Updates -> Marketing
• [x] DAO: OPs Updates -> Operations
• [x] MVP: App Updates -> Dev
• [x] Subgraph: Subgraph Updates -> Dev
• [x] Contracts: Contract Updates -> Dev

Getting an error that the ping is not working

Wonder if it has something to do with the permissions on that category in Discord

[earth2travis]

Added /github to the ends of the Payload URLs and updated the Content type to application/json

All 5 repos have been tested

Closing