🐛 fix(cli): use 'gray' instead of 'grey' in styleText calls (#2321)

Node.js util.styleText does not accept 'grey' as a format name.
While util.inspect.colors defines 'grey' as a non-enumerable alias
for 'gray', styleText validates against Object.keys(inspect.colors)
which only includes enumerable properties — so 'grey' has never
been a valid styleText format and throws ERR_INVALID_ARG_VALUE.