added HashingLibrary.t() (phoenixframework#5694)

* warning: using map.field notation (without parentheses) to invoke function Phoenix.Digester.Gzip.file_extensions() is deprecated, you must add parentheses instead: remote.function()

* two files were referencing a type that didn't exist

* moved type after struct

* recompiled with 1.16.9

* binary type

lib/mix/tasks/phx.gen.auth/hashing_library.ex

@@ -3,6 +3,13 @@ defmodule Mix.Tasks.Phx.Gen.Auth.HashingLibrary do
 
   defstruct [:name, :module, :mix_dependency, :test_config]
 
+  @type t :: %__MODULE__{
+          name: atom(),
+          module: module(),
+          mix_dependency: binary(),
+          test_config: binary()
+        }
+
   def build("bcrypt") do
     lib = %__MODULE__{
       name: :bcrypt,