irc/ircd-hybrid: Updates to 8.2.37

Changes since 8.2.36:

• • Noteworthy changes in version 8.2.37 (2020-12-26)
• Implemented IRCv3 'CAP 302'
• Implemented IRCv3 'cap-notify' capability
• In case a client sends multiple 'PASS' messages, ircd only accepts the password sent in the first 'PASS' message instead of the last one
• Missing help file for 'MONITOR' has been added
• Fixed slightly off memory count for motds in 'STATS z'
• For a full list of all changes in this release, see https://git.io/JLMnk