pretty similar build to last patch, just valuing tenacity slightly higher because of the bug fix. Keep in mind that tanks in general have A LOT of strong items right now, almost too many to choose from. This is a more default build that'll work into most standard comps. Read the annotations on optional items + build notes if you'd like some more info on how to switch this build up when needed. Also check my recent history, I play artio quite a lot and you'll be able to see some alternative builds there.
I prefer bluestone FOR SURE over bumbas hammer now, it's way more consistent over an entire game.
This is a pretty default build. It'll tick every stat box you need, but definitely feel free to throw in the alternatives I add below based on the games you are in. The main items that are swappable are Runeforged deep into the game, or Genji's because you can get enough magical prots from the dual prot items. Genji's is a nice default for most games though, the CD is great and the mana sustain too. All of the optional items could replace Genji's as well as the items I've assigned below.
Nemean arguably belongs in the build by default, but I'll add it as an option. Can swap out runeforge at full build for nemean to add some extra threat to your dive.
A more aggressive Anti-CC item. Some games you could even have both Robe and Shroud and you'll be a nightmare to lockdown.
both fit a similar role of high prots. I prefer draconic if it's between the two mainly because of the HP it gives.