Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- `app/javascript/mastodon/features/compose/components/poll_form.js`:
  Upstream bumped poll option character limit, but we already had
  a higher one, kept ours.
- `app/validators/poll_validator.rb`:
  Upstream bumped poll option character limit, but we already had
  a higher one, kept ours.
- `config/initializers/content_security_policy.rb`:
  Upstream added a rule, the way we compute ours is different, but
  that added rule has been ported.
- `package.json`:
  No real conflict, dependency update. Performed the same update.
- `yarn.lock`:
  No real conflict, dependency update. Performed the same update.

app/workers/activitypub/distribute_poll_update_worker.rb

@@ -4,7 +4,7 @@ class ActivityPub::DistributePollUpdateWorker
   include Sidekiq::Worker
   include Payloadable
 
-  sidekiq_options queue: 'push', unique: :until_executed, retry: 0
+  sidekiq_options queue: 'push', lock: :until_executed, retry: 0
 
   def perform(status_id)
     @status  = Status.find(status_id)

app/workers/activitypub/synchronize_featured_collection_worker.rb

@@ -3,7 +3,7 @@
 class ActivityPub::SynchronizeFeaturedCollectionWorker
   include Sidekiq::Worker
 
-  sidekiq_options queue: 'pull', unique: :until_executed
+  sidekiq_options queue: 'pull', lock: :until_executed
 
   def perform(account_id)
     ActivityPub::FetchFeaturedCollectionService.new.call(Account.find(account_id))