Add clojure.org/data.json, because cljs removed it

[transducer]

The dependency org.clojure/data.json was removed from ClojureScript in version 1.11.51 of May 13th 2022. See release notes:

Vendorization of tools.reader, data.json, and transit-clj
(...) After conferring with the Clojure Team, we decided to vendorize all these dependencies. This way we can AOT everything and be confident that we won’t create a conflict that can’t easily be fixed via normal dependency management. (...) The dependance on data.json has been removed

This PR adds an explicit dependency on clojure.data.json.

Fixes #98

[ashneo76]

This fix works for me. Thank you!