Resolves an issues preventing move working with keys: :atoms

[earobinson]

Enables

move = %Jsonpatch.Operation.Move{from: "/a/b", path: "/a/e"}
target = %{a: %{b: %{c: "Bob"}}, d: false}
Jsonpatch.Operation.Move.apply(move, target, keys: :atoms)

To work, previously this would return an error.

[corka149]

Awesome catch. Thx for the pr. I will soon release a new patch version.

[corka149]

The bugfix was released with 2.2.2.