v1.7.23-rc.1

Full Changelog

• Upgrade to React SDK 3.16.0-rc.2 and JS SDK 9.9.0-rc.1
• Translations update from Weblate
  #16655
• Improve docs for customisations
  #16652
• Update triage guide to match the new label scheme
  #16612
• Remove a couple useless 'use strict' calls
  #16650
• Remove old conferencing doc
  #16648
• Bump elliptic from 6.5.3 to 6.5.4
  #16644
• Add option for audio live streaming
  #16604
• Update velocity-animate dependency
  #16605
• Add Edge to the supported tier
  #16611
• Add multi language spell check
  #15851
• Document feature_spaces
  #16538