[To be merged on 17 January] Add short blog post about z2jh4 upgrade

[GeorgianaElena]

No description provided.

[choldgraf]

I love this update, thanks @GeorgianaElena - here are a few things that I love about it:

• It exists at all! Communicating our actions to give transparency and updates to others is the most important thing. Thanks for doing this.
• It's not complex. We can glance at it and learn quickly what's changed and any major points about it.
• It's not long. Hopefully this means @GeorgianaElena didn't spend a ton of time on this. It's much better to quickly get something written down and out than to block it to make it perfect.

I'd love to see more posts like this for other technical and service changes on 2i2c's side or in upstream!

[GeorgianaElena]

Thank you @choldgraf! I actually followed @yuvipanda's advice to write this post (as it's usually hard to spot that such an upgrade has happened esp if it doesn't break anything :D ) and to timebox the process to under 20min.

I wasn't sure how short was too short, but your feedback is very good validation of the process! Thank you! ✨