Enforce Timezone rule in Rubocop

.rubocop.yml

@@ -777,7 +777,7 @@ Rails/SkipsModelValidations:
   Enabled: false
 
 Rails/TimeZone:
-  Enabled: true
+  EnforcedStyle: strict
 
 Rails/UniqBeforePluck:
   Enabled: true

app/controllers/users/confirmations_controller.rb

@@ -34,7 +34,7 @@ class Users::ConfirmationsController < Devise::ConfirmationsController
     # Avoid keeping auto-sign-in links in users inboxes for too long.
     # 95% of users confirm their account within two hours.
     auto_sign_in_timeout = 2.hours
-    resource.confirmation_sent_at + auto_sign_in_timeout > DateTime.current
+    resource.confirmation_sent_at + auto_sign_in_timeout > Time.zone.now
   end
 
   # The path used after confirmation.

app/models/deleted_dossier.rb

@@ -2,6 +2,6 @@ class DeletedDossier < ApplicationRecord
   belongs_to :procedure
 
   def self.create_from_dossier(dossier)
-    DeletedDossier.create!(dossier_id: dossier.id, procedure: dossier.procedure, state: dossier.state, deleted_at: Time.now.utc)
+    DeletedDossier.create!(dossier_id: dossier.id, procedure: dossier.procedure, state: dossier.state, deleted_at: Time.zone.now)
   end
 end

app/models/procedure.rb

@@ -456,7 +456,7 @@ class Procedure < ApplicationRecord
   def percentile_time(start_attribute, end_attribute, p)
     times = dossiers
       .state_termine
-      .where(end_attribute => 1.month.ago..DateTime.current)
+      .where(end_attribute => 1.month.ago..Time.zone.now)
       .pluck(start_attribute, end_attribute)
       .map { |(start_date, end_date)| end_date - start_date }
 

lib/tasks/task_helper.rb

@@ -60,7 +60,7 @@ class ProgressReport
 
   def format_duration(seconds)
     if seconds.finite?
-      Time.at(seconds).utc.strftime('%H:%M:%S')
+      Time.zone.at(seconds).strftime('%H:%M:%S')
     else
       '--:--:--'
     end

spec/mailers/previews/administrateur_mailer_preview.rb

@@ -1,6 +1,6 @@
 class AdministrateurMailerPreview < ActionMailer::Preview
   def activate_before_expiration
-    administrateur = Administrateur.new(reset_password_sent_at: Time.now.utc)
+    administrateur = Administrateur.new(reset_password_sent_at: Time.zone.now)
 
     AdministrateurMailer.activate_before_expiration(administrateur, "a4d4e4f4b4d445")
   end