Bump discord.py to 1.7.2

discord.py version 2.0 coming out soon

Author: Dremixbotdev

requirements.txt

@@ -5,7 +5,7 @@ beautifulsoup4>=4.9.1
 bs4>=0.0.1
 certifi>=2020.6.20
 chardet>=3.0.4
-discord.py>=1.5.1
+discord.py>=1.7.2
 idna>=2.10
 lavalink>=3.1.2
 multidict>=4.7.6