Suppress adding comma to last item in list

[bobl-mck]

The json plugin seems to be adding a comma to the last item in a list (e.g. ["a", "b"] is changed to ["a","b",] . AWS will flag this as a json syntax error. Can it be suppressed? I found that the "prettier" json plugin for vscode has a setting to suppress this behavior, but have not found it for json.