Merge commit 'f877aa9d70d0d600961989b8e97c0e0ce3ac1db6' into glitch-soc/merge-upstream

Conflicts:
- `.github/dependabot.yml`:
  Upstream made changes, but we had removed it.
  Discarded upstream changes.
- `.rubocop_todo.yml`:
  Upstream regenerated the file, we had some glitch-soc-specific ignores.
- `app/models/account_statuses_filter.rb`:
  Minor upstream code style change where glitch-soc had slightly different code
  due to handling of local-only posts.
  Updated to match upstream's code style.
- `app/models/status.rb`:
  Upstream moved ActiveRecord callback definitions, glitch-soc had an extra one.
  Moved the definitions as upstream did.
- `app/services/backup_service.rb`:
  Upstream rewrote a lot of the backup service, glitch-soc had changes because
  of exporting local-only posts.
  Took upstream changes and added back code to deal with local-only posts.
- `config/routes.rb`:
  Upstream split the file into different files, while glitch-soc had a few
  extra routes.
  Extra routes added to `config/routes/settings.rb`, `config/routes/api.rb`
  and `config/routes/admin.rb`
- `db/schema.rb`:
  Upstream has new migrations, while glitch-soc had an extra migration.
  Updated the expected serial number to match upstream's.
- `lib/mastodon/version.rb`:
  Upstream added support to set version tags from environment variables, while
  glitch-soc has an extra `+glitch` tag.
  Changed the code to support upstream's feature but prepending a `+glitch`.
- `spec/lib/activitypub/activity/create_spec.rb`:
  Minor code style change upstream, while glitch-soc has extra tests due to
  `directMessage` handling.
  Applied upstream's changes while keeping glitch-soc's extra tests.
- `spec/models/concerns/account_interactions_spec.rb`:
  Minor code style change upstream, while glitch-soc has extra tests.
  Applied upstream's changes while keeping glitch-soc's extra tests.

app/lib/feed_manager.rb

@@ -407,10 +407,10 @@ class FeedManager
     return true  if crutches[:languages][status.account_id].present? && status.language.present? && !crutches[:languages][status.account_id].include?(status.language)
 
     check_for_blocks = crutches[:active_mentions][status.id] || []
-    check_for_blocks.concat([status.account_id])
+    check_for_blocks.push(status.account_id)
 
     if status.reblog?
-      check_for_blocks.concat([status.reblog.account_id])
+      check_for_blocks.push(status.reblog.account_id)
       check_for_blocks.concat(crutches[:active_mentions][status.reblog_of_id] || [])
     end
 
@@ -446,7 +446,7 @@ class FeedManager
     # the notification has been checked for mute/block. Therefore, it's not
     # necessary to check the author of the toot for mute/block again
     check_for_blocks = status.active_mentions.pluck(:account_id)
-    check_for_blocks.concat([status.in_reply_to_account]) if status.reply? && !status.in_reply_to_account_id.nil?
+    check_for_blocks.push(status.in_reply_to_account) if status.reply? && !status.in_reply_to_account_id.nil?
 
     should_filter   = blocks_or_mutes?(receiver_id, check_for_blocks, :mentions)                                                         # Filter if it's from someone I blocked, in reply to someone I blocked, or mentioning someone I blocked (or muted)
     should_filter ||= (status.account.silenced? && !Follow.where(account_id: receiver_id, target_account_id: status.account_id).exists?) # of if the account is silenced and I'm not following them
@@ -593,10 +593,10 @@ class FeedManager
 
     check_for_blocks = statuses.flat_map do |s|
       arr = crutches[:active_mentions][s.id] || []
-      arr.concat([s.account_id])
+      arr.push(s.account_id)
 
       if s.reblog?
-        arr.concat([s.reblog.account_id])
+        arr.push(s.reblog.account_id)
         arr.concat(crutches[:active_mentions][s.reblog_of_id] || [])
       end