[BUG]: Plugin downloads are broken because of changed URL

[sebkuip]

Bot Version

v4.0 (all versions)

How are you hosting Modmail?

Other

Error Logs

https://media.discordapp.net/attachments/529240018934431744/971518398540427335/unknown.png?width=1304&height=701

Screenshots

No response

Additional Information

In the plugins.py file, plugins are assigned the download URL as f"https://github.com/{user}/{repo}/archive/{self.branch}.zip" right here

Github has changed the link format for downloading a zip archive of a repository to the following format: https://github.com/{user}/{repo}/archive/refs/heads/{self.branch}.zip. This means that plugins cannot be downloaded from github from within the bot.

[Atharv-Agarwal]

I am still able to install and use plugins

[Atharv-Agarwal]

After debugging with the user who had the issue, a few corrections. Version is 3.10.3 Hosting Method is Heroku

I suspect the issue could be because github is blocking herokus access to access github repositories in view of the latest security breach. https://status.heroku.com