Use `touch_all` for time column updates (#33295)

app/models/user.rb

@@ -350,7 +350,7 @@ class User < ApplicationRecord
   end
 
   def revoke_access!
-    Doorkeeper::AccessGrant.by_resource_owner(self).update_all(revoked_at: Time.now.utc)
+    Doorkeeper::AccessGrant.by_resource_owner(self).touch_all(:revoked_at)
 
     Doorkeeper::AccessToken.by_resource_owner(self).in_batches do |batch|
       batch.touch_all(:revoked_at)

spec/services/reblog_service_spec.rb

@@ -46,7 +46,7 @@ RSpec.describe ReblogService do
           Status
             .where(id: reblog_of_id)
             .where(text: 'discard-status-text')
-            .update_all(deleted_at: Time.now.utc)
+            .touch_all(:deleted_at)
         end
       end
     end