Make Rubocop happy

Make Rubocop happy

diff --git a/jobs/scheduled/check_next_regional_holidays.rb b/jobs/scheduled/check_next_regional_holidays.rb
index cc6a3d4..b3254e9 100644
--- a/jobs/scheduled/check_next_regional_holidays.rb
+++ b/jobs/scheduled/check_next_regional_holidays.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Jobs
   class ::DiscourseCalendar::CheckNextRegionalHolidays < Jobs::Scheduled
     every 10.minutes
diff --git a/jobs/scheduled/ensure_expired_event_destruction.rb b/jobs/scheduled/ensure_expired_event_destruction.rb
index b7975e4..ce1c615 100644
--- a/jobs/scheduled/ensure_expired_event_destruction.rb
+++ b/jobs/scheduled/ensure_expired_event_destruction.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Jobs
   class ::DiscourseCalendar::EnsuredExpiredEventDestruction < Jobs::Scheduled
     every 10.minutes
diff --git a/jobs/scheduled/update_holiday_usernames.rb b/jobs/scheduled/update_holiday_usernames.rb
index 9db1fbb..0e1b485 100644
--- a/jobs/scheduled/update_holiday_usernames.rb
+++ b/jobs/scheduled/update_holiday_usernames.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Jobs
   class ::DiscourseCalendar::UpdateHolidayUsernames < Jobs::Scheduled
     every 10.minutes
diff --git a/lib/calendar_destroyer.rb b/lib/calendar_destroyer.rb
index 1c6258f..14cf4f3 100644
--- a/lib/calendar_destroyer.rb
+++ b/lib/calendar_destroyer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseCalendar
   class CalendarDestroyer
     def self.destroy(post)
diff --git a/lib/calendar_updater.rb b/lib/calendar_updater.rb
index 453c69a..53e39f6 100644
--- a/lib/calendar_updater.rb
+++ b/lib/calendar_updater.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseCalendar
   class CalendarUpdater
     def self.update(post)
diff --git a/lib/calendar_validator.rb b/lib/calendar_validator.rb
index 69f13e3..f397178 100644
--- a/lib/calendar_validator.rb
+++ b/lib/calendar_validator.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseCalendar
   class CalendarValidator
     def initialize(post)
diff --git a/lib/discourse_simple_calendar/engine.rb b/lib/discourse_simple_calendar/engine.rb
index 6932b77..de5f3bb 100644
--- a/lib/discourse_simple_calendar/engine.rb
+++ b/lib/discourse_simple_calendar/engine.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ::DiscourseCalendar
   class Engine < ::Rails::Engine
     engine_name DiscourseCalendar::PLUGIN_NAME
diff --git a/lib/event_destroyer.rb b/lib/event_destroyer.rb
index fe4ceb2..845d3f4 100644
--- a/lib/event_destroyer.rb
+++ b/lib/event_destroyer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseCalendar
   class EventDestroyer
     def self.destroy(post)
diff --git a/lib/event_updater.rb b/lib/event_updater.rb
index 2a5710a..1321dfc 100644
--- a/lib/event_updater.rb
+++ b/lib/event_updater.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseCalendar
   class EventUpdater
     def self.update(post)
diff --git a/lib/event_validator.rb b/lib/event_validator.rb
index 45129c8..b3e37e8 100644
--- a/lib/event_validator.rb
+++ b/lib/event_validator.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseCalendar
   class EventValidator
     def initialize(post)
diff --git a/plugin.rb b/plugin.rb
index 5757ad3..b77f0fd 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -1,10 +1,12 @@
+# frozen_string_literal: true
+
 # name: discourse-calendar
 # about: Display a calendar in the first post of a topic
 # version: 0.2
 # author: Joffrey Jaffeux
 # url: https://github.com/discourse/discourse-calendar
 
-gem "holidays", "7.1.0", { require: false }
+gem "holidays", "7.1.0", require: false
 
 enabled_site_setting :calendar_enabled
 
diff --git a/spec/jobs/ensure_expired_event_destruction_spec.rb b/spec/jobs/ensure_expired_event_destruction_spec.rb
index a8b15e8..388301c 100644
--- a/spec/jobs/ensure_expired_event_destruction_spec.rb
+++ b/spec/jobs/ensure_expired_event_destruction_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "rails_helper"
 
 describe DiscourseCalendar::EnsuredExpiredEventDestruction do
diff --git a/spec/jobs/update_holiday_usernames_spec.rb b/spec/jobs/update_holiday_usernames_spec.rb
index d678638..a67f153 100644
--- a/spec/jobs/update_holiday_usernames_spec.rb
+++ b/spec/jobs/update_holiday_usernames_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe DiscourseCalendar::UpdateHolidayUsernames do
diff --git a/spec/lib/dynamic_calendar_spec.rb b/spec/lib/dynamic_calendar_spec.rb
index f53d7ca..779bf75 100644
--- a/spec/lib/dynamic_calendar_spec.rb
+++ b/spec/lib/dynamic_calendar_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "rails_helper"
 
 describe "Dynamic calendar" do
diff --git a/spec/lib/event_updater_spec.rb b/spec/lib/event_updater_spec.rb
index caa57c2..103a374 100644
--- a/spec/lib/event_updater_spec.rb
+++ b/spec/lib/event_updater_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe DiscourseCalendar::EventUpdater do
diff --git a/spec/lib/static_calendar_spec.rb b/spec/lib/static_calendar_spec.rb
index 85f1d7f..860bf62 100644
--- a/spec/lib/static_calendar_spec.rb
+++ b/spec/lib/static_calendar_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "rails_helper"
 
 describe "Static calendar" do
diff --git a/spec/serializers/post_serializer_spec.rb b/spec/serializers/post_serializer_spec.rb
index 392e021..0a04d6d 100644
--- a/spec/serializers/post_serializer_spec.rb
+++ b/spec/serializers/post_serializer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "rails_helper"
 
 describe "post serializer" do

GitHub sha: 44f14b88