Use ActiveRecord::Migration instead of SolidusSupport::Migration

`SolidusSupport::Migration[4.2]` is deprecated in favor of
`ActiveRecord::Migration[4.2]`. This cleans up the test logs of many
other gems, because solidus_auth_devise is used in many extension test
suites.

Author: mamhoff

db/migrate/20101026184949_create_users.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class CreateUsers < SolidusSupport::Migration[4.2]
+class CreateUsers < ActiveRecord::Migration[4.2]
   def up
     unless table_exists?("spree_users")
       create_table "spree_users", force: true do |t|

db/migrate/20101026184950_rename_columns_for_devise.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class RenameColumnsForDevise < SolidusSupport::Migration[4.2]
+class RenameColumnsForDevise < ActiveRecord::Migration[4.2]
   def up
     return if column_exists?(:spree_users, :password_salt)
 

db/migrate/20101214150824_convert_user_remember_field.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class ConvertUserRememberField < SolidusSupport::Migration[4.2]
+class ConvertUserRememberField < ActiveRecord::Migration[4.2]
   def up
     remove_column :spree_users, :remember_created_at
     add_column :spree_users, :remember_created_at, :datetime

db/migrate/20120203010234_add_reset_password_sent_at_to_spree_users.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AddResetPasswordSentAtToSpreeUsers < SolidusSupport::Migration[4.2]
+class AddResetPasswordSentAtToSpreeUsers < ActiveRecord::Migration[4.2]
   def change
     Spree::User.reset_column_information
     unless Spree::User.column_names.include?("reset_password_sent_at")

db/migrate/20120605211305_make_users_email_index_unique.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class MakeUsersEmailIndexUnique < SolidusSupport::Migration[4.2]
+class MakeUsersEmailIndexUnique < ActiveRecord::Migration[4.2]
   def up
     add_index "spree_users", ["email"], name: "email_idx_unique", unique: true
   end

db/migrate/20140904000425_add_deleted_at_to_users.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AddDeletedAtToUsers < SolidusSupport::Migration[4.2]
+class AddDeletedAtToUsers < ActiveRecord::Migration[4.2]
   def change
     add_column :spree_users, :deleted_at, :datetime
     add_index :spree_users, :deleted_at

db/migrate/20141002154641_add_confirmable_to_users.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AddConfirmableToUsers < SolidusSupport::Migration[4.2]
+class AddConfirmableToUsers < ActiveRecord::Migration[4.2]
   def change
     add_column :spree_users, :confirmation_token, :string
     add_column :spree_users, :confirmed_at, :datetime

db/migrate/20190125170630_add_reset_password_token_index_to_spree_users.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class AddResetPasswordTokenIndexToSpreeUsers < SolidusSupport::Migration[4.2]
+class AddResetPasswordTokenIndexToSpreeUsers < ActiveRecord::Migration[4.2]
   # We're not using the standard Rails index name because somebody could have
   #  already added that index to the table. By using a custom name we ensure
   # that the index can effectively be added and removed via migrations/rollbacks

db/migrate/20200417153503_add_unconfirmed_email_to_spree_users.rb

@@ -1,4 +1,4 @@
-class AddUnconfirmedEmailToSpreeUsers < SolidusSupport::Migration[5.1]
+class AddUnconfirmedEmailToSpreeUsers < ActiveRecord::Migration[5.1]
   def change
     unless column_exists?(:spree_users, :unconfirmed_email)
       add_column :spree_users, :unconfirmed_email, :string