Lately when visiting sites on the Stack Exchange network, I have seen this announcement banner popping up, right underneath the top bar. Here is a screenshot of today's announcement banner:
Now I absolutely don't care what some guy I've never heard of has to say about Git or any other thing on their pointless podcast. To stop getting annoyed by this rubbish I'd just like to hide this announcement banner altogether but I can't find an appropriate option in the settings.
How do I disable the announcement banner permanently?