[rails6] Fix .update_attributes deprecation

Fixing the following deprecation warning:

  DEPRECATION WARNING: update_attributes is deprecated and will be
  removed from Rails 6.1 (please, use update instead)

lib/inventory_refresh/inventory_collection/helpers/initialize_helper.rb

@@ -289,7 +289,7 @@ def init_arels(arel, targeted_arel)
         #                hash = inventory_object.attributes # Loads possible dependencies into saveable hash
         #                obj = SomeModel.find_by(:attr => hash[:attr]) # Note: doing find_by for many models produces N+1
         #                                                              # queries, avoid this, this is just a simple example :-)
-        #                obj.update_attributes(hash) if obj
+        #                obj.update(hash) if obj
         #                obj ||= SomeModel.create(hash)
         #                inventory_object.id = obj.id # If this InventoryObject is referenced elsewhere, we need to store its
         #                                               primary key back to the InventoryObject

spec/models/archived_mixin.rb

@@ -17,11 +17,11 @@ def active?
   alias_method :active, :active?
 
   def archive!
-    update_attributes!(:archived_at => Time.now.utc)
+    update!(:archived_at => Time.now.utc)
   end
 
   def unarchive!
-    update_attributes!(:archived_at => nil)
+    update!(:archived_at => nil)
   end
 
   def self.archive!(ids)

spec/save_inventory/single_inventory_collection_spec.rb

@@ -541,8 +541,8 @@
     context 'with VM InventoryCollection with changed parent and association' do
       it 'deletes missing and creates new VMs with AvailabilityZone parent, ' do
         availability_zone = FactoryBot.create(:availability_zone, :ext_management_system => @ems)
-        @vm1.update_attributes(:availability_zone => availability_zone)
-        @vm2.update_attributes(:availability_zone => availability_zone)
+        @vm1.update(:availability_zone => availability_zone)
+        @vm2.update(:availability_zone => availability_zone)
 
         # Initialize the InventoryCollections
         @persister.add_collection(:vms) do |builder|
@@ -571,8 +571,8 @@
 
       it 'deletes missing and creates new VMs with CloudTenant parent' do
         cloud_tenant = FactoryBot.create(:cloud_tenant, :ext_management_system => @ems)
-        @vm1.update_attributes(:cloud_tenant => cloud_tenant)
-        @vm2.update_attributes(:cloud_tenant => cloud_tenant)
+        @vm1.update(:cloud_tenant => cloud_tenant)
+        @vm2.update(:cloud_tenant => cloud_tenant)
 
         # Initialize the InventoryCollections
         @persister.add_collection(:vms) do |builder|
@@ -601,8 +601,8 @@
 
       it 'affects oly relation to CloudTenant when not providing EMS relation and with CloudTenant parent' do
         cloud_tenant = FactoryBot.create(:cloud_tenant, :ext_management_system => @ems)
-        @vm1.update_attributes(:cloud_tenant => cloud_tenant)
-        @vm2.update_attributes(:cloud_tenant => cloud_tenant)
+        @vm1.update(:cloud_tenant => cloud_tenant)
+        @vm2.update(:cloud_tenant => cloud_tenant)
 
         # Initialize the InventoryCollections
         @persister.add_collection(:vms) do |builder|
@@ -639,8 +639,8 @@
 
       it 'does not delete the missing VMs with :complete => false and with CloudTenant parent' do
         cloud_tenant = FactoryBot.create(:cloud_tenant, :ext_management_system => @ems)
-        @vm1.update_attributes(:cloud_tenant => cloud_tenant)
-        @vm2.update_attributes(:cloud_tenant => cloud_tenant)
+        @vm1.update(:cloud_tenant => cloud_tenant)
+        @vm2.update(:cloud_tenant => cloud_tenant)
 
         # Initialize the InventoryCollections
         @persister.add_collection(:vms) do |builder|