Details as always in the CHANGELOG https://github.com/lambdaisland/kaocha/blob/main/CHANGELOG.md

Note that in this release we've switched from deep-diff to deep-diff2, and this can cause issues for other projects assuming that kaocha pulls in deep-diff. I'm upgrading kaocha-cljs now, we'll also have to make a new release of kaocha-cljs2. In the meanwhile adding an explicit dependency on deep-diff might help.

[com.lambdaisland/kaocha-cljs "1.3.127"]
{com.lambdaisland/kaocha-cljs {:mvn/version "1.3.127"}}