Log Message:
mail/meli: update to 0.8.4

Noteworthy changes since 0.8.2:

    * Fix failing tests that might affect some software distributions
	  installations.
	* Add extra_submission_headers option to support posting to
	  Newsgroups (which need a Newsgroup header).
	* Show error description when TIOCGWINSZ fails (i.e. we are not in a
	* TTY).
	* Add QUIT command to SMTP transactions (Andrei Zisu @matzipan)
	* Fix SMTP end sequence (Andrei Zisu @matzipan)
	* Fix date formatting in conversations index style.
	* Replace splice with truncate in melib/imap, which was hurting
	  performance.
	* Update yanked ahash dependency.
	* Removed pcre2 dependency from default features.
	* Removed managesieve-client from shipped binaries, it was included
	  by accident before.
	* Add static feature and make it default: TLS libraries, libcurl,
	  libsqlite3, libz, and libdbus are now vendored by default
	  eliminating the need for system dependencies.
	* Replace CRLF to LF when editing a draft in the composer.