Disable unneeded intents

Problem to solve

Some intents are enabled by default on the bot framework side and aren't used, for instance:

reso-dsg-1  | info: Discord.WebSocket.DiscordSocketClient[0]
reso-dsg-1  |       You're using the GuildScheduledEvents gateway intent without listening to any events related to that intent, consider removing the intent from your config.

Proposal

Disable those intents on the bot side.

/cc @jae