Welcome to the forum! 
sudo pacman-mirrors -f && sudo pacman -Syu && pamac update --aur --devel
That should bring everything up to the latest. 
Tip:
As a new member, you may want to subscribe to notifications for the Announcements > Stable Updates category. Every bundled update, whether it’s for Manjaro Testing or Manjaro Stable, always comes accompanied by a dedicated announcement thread.
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The first post of the thread contains the changes with regard to the previous bundled update.
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The second post of the thread details the potential problems, and how to deal with them.
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The announcement thread also always contains a poll (in the first post), and a summary of past issues (in the second post), for those who’ve skipped an update — which is not advised with a rolling-release distribution, but it does happen.
Further reading… 