Bump discord-py from 1.7.1 to 2.2.2

[dependabot[bot]]

Bumps discord-py from 1.7.1 to 2.2.2.

Commits

• 78175de Version bump to v2.2.2
• 0ea0985 [commands] Use ... for Command and Group typing
• 82bfb3c Version bump for development
• bbf2cce Version bump to v2.2.1
• 4661fff Add changelog for v2.2.1
• 4d51f68 [commands] Fix some more partially uknown typing errors
• 1de3562 Fix partially uknown typing errors
• 6910943 Fix udp discovery not using 74 byte layout
• 53ce475 Add more missing AuditLogDiff attrs
• 26f4951 Fix member_prune extras attribute name
• Additional commits viewable in compare view

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