Bump discord.py to 1.5

[sinus-x]

• https://discordpy.readthedocs.io/en/latest/whats_new.html#v1-5-0
• https://discordpy.readthedocs.io/en/latest/intents.html

[lakshyashastri]

Can you assign me to this @sinus-x

[sinus-x]

It seems that you know discord.py, based on your public repositories. If you want to do this, please go through the code and make note on what intents the bot needs to listen to. We do not need user events like typing or nickname changes; the info cog needs to see all guild roles and channels, on the other hand.

Try to set up the bot to make yourself familiar with its functionality. I'll merge the PR once the changes are succesfully tested.