Upgrade msmtp from 1.8.26 to 1.8.30. The update requires a couple of
additional changes:
- msmtp has gained a dependency on libnotify via notify-send.
- msmtp has gained a dependency on GNU sed.
- msmtp does not configure anymore with autoreconf 2.69. This is fixed
by unpinning the version.
- The patch for improved logging via systemd does not apply anymore
and has been update.