The licensing terms are similar to CC BY 4.0, in that your are free to
Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
Adapt — remix, transform, and build upon the material for any purpose, even commercially.
However, no attribution is necessary, though it is appreciated.
The one stipulation is that these images aren't to be used for AI scraping. However, you're free to modify these images with AI tools if you wish.