Support Emoji 15

[mathiasbynens]

Unicode 15.0.0 and Emoji 15.0 are scheduled to be released in September 2022: https://www.unicode.org/versions/Unicode15.0.0/

• [ ] update node-unicode-data to provide Unicode 15 / Emoji 15 data
  • [x] draft: https://github.com/node-unicode/node-unicode-data/compare/97638e3300b1ac2e3094a41b058a6c712089a9bd...7a29059d5c46c4892179654e993eed4d8c3fa28e
  • [x] publish new unicode-15.0.0 repo + npm package: done
  • [ ] final: TODO once Unicode/Emoji release happens
• [ ] leverage the new data in emoji-test-regex-pattern
  • [x] draft: https://github.com/mathiasbynens/emoji-test-regex-pattern/pull/22
  • [ ] final: TODO once Unicode/Emoji release happens
• [ ] update emoji-regex
  • [ ] TODO once Unicode/Emoji release happens