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

Conflicts:
- app/controllers/api/v1/timelines/public_controller.rb
- app/lib/feed_manager.rb
- app/models/status.rb
- app/services/precompute_feed_service.rb
- app/workers/feed_insert_worker.rb
- spec/models/status_spec.rb

All conflicts are due to upstream refactoring feed management and us having
local-only toots on top of that. Rewrote local-only toots management for
upstream's changes.

Gemfile

@@ -142,8 +142,8 @@ group :development do
   gem 'letter_opener', '~> 1.7'
   gem 'letter_opener_web', '~> 1.4'
   gem 'memory_profiler'
-  gem 'rubocop', '~> 0.88', require: false
-  gem 'rubocop-rails', '~> 2.6', require: false
+  gem 'rubocop', '~> 0.90', require: false
+  gem 'rubocop-rails', '~> 2.8', require: false
   gem 'brakeman', '~> 4.9', require: false
   gem 'bundler-audit', '~> 0.7', require: false