Use of protected/renamed method `new_ostruct_member`

[localhost]

The ostruct helper is using a now private and renamed method

new_ostruct_member -> new_ostruct_member!

facets/lib/standard/facets/ostruct/initialize.rb

Line 40 in 12326d4

new_ostruct_member(k)

I think it was renamed in 2.4.0.

(FYI: it fails in 3.3.2)