Update the `contributors` array of a `.zenodo.json` in place
Source:R/zenodo_json.R
update_zenodo_json.Rd`.zenodo.json` at the register repo root is otherwise hand-maintained (title, creators, licence, community, ...); a render only keeps its `contributors` current with the codecheckers named in the register (register#58), so it needs no manual fix-up before the next Zenodo deposit. Every other key is preserved exactly - the file is parsed with `simplifyVector = FALSE` so key order and scalar-vs-array shape survive the round trip.