All the books bridge a chunk of time, the first Game Programming Gems is from 2000 and the last published of those listed is Game AI Pro 2 in 2015. However, the math and logic behind how much of AI doesn’t really change much, so even older books in this list are useful. Honestly? Check your local libraries, probably can check them out for free! =)
As for the numbered series, Game AI Pro and Game AI Pro 2 for example, they are not revisions, more like how there was Mastering Unreal 1 and 2 (the red and blue books): Same general topic, just different specific areas.