Anjani v2.2

What's New

• Add filters plugin (#87)

Fixes

• command_dispatcher: Fix bot reinvoking command when the message get reaction
• welcome: handle can't delete service message
• filters: Add chat migrate handler
• language: fix unfilled placeholder string
• welcome: Fix error when user first_name returns None

Misc

• Bump runtime to python 3.9.11

Full Changelog: v2.1.1...v2.2