Migrate from lockbox to ActiveRecord encryption (1/2)

spec/requests/webhooks_spec.rb

@@ -50,7 +50,7 @@ RSpec.describe "Webhooks", type: :request do
     end
 
     describe "Valid payload for incoming payment" do
-      let(:user) { create :user, ln_account: "123456abcdef" }
+      let(:user) { create :user, lndhub_username: "123456abcdef" }
       let(:payload) { JSON.parse(File.read(File.expand_path("../fixtures/lndhub/incoming.json", File.dirname(__FILE__)))) }
 
       before { user.save! } #FIXME this should not be necessary
@@ -132,7 +132,7 @@ RSpec.describe "Webhooks", type: :request do
     end
 
     describe "Valid payload for zap transaction" do
-      let(:user) { create :user, ln_account: "123456abcdef" }
+      let(:user) { create :user, lndhub_username: "123456abcdef" }
       let(:zap) { create :zap, user: user }
       let(:payload) { JSON.parse(File.read(File.expand_path("../fixtures/lndhub/incoming-zap.json", File.dirname(__FILE__)))) }
       let(:zap_receipt) {