Update emoji-data to v15.1.1

[Nerixyz]

Updates emoji-data to v15.1.1. This updates the Emoji version to 15.1, although not every provider supports the new emojis. Since Twemoji is behind, I switched the default to Google's Noto Emoji.

https://pajbot.com/static/emoji-v2/img/{provider}/64/ needs to be updated. To test this locally, you can clone the https://github.com/iamcal/emoji-data repo (with --depth 1), start any HTTP server in there (e.g. python's), and add the following to the emojiSets in Emoji.cpp (optionally replace the port):

{"Twitter", "http://localhost:3000/img-twitter-64/"},
{"Facebook", "http://localhost:3000/img-facebook-64/"},
{"Apple", "http://localhost:3000/img-apple-64/"},
{"Google", "http://localhost:3000/img-google-64/"},

[pajlada]

My emoji host has been updated with v15.1.1 now

[pajlada]

Works as expected 👍 Thank you!