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

Conflicts:
- `config/webpack/configuration.js`:
  Upstream updated the `js-yaml` dependency, which changed how to call it.
  Those changes conflicted because that code is pretty different in glitch-soc
  which has to deal with its more complex theming system.
  Proceeded to the same compatibility changes in glitch-soc's code.
- `package.json` and `yarn.lock`:
  Not really a conflict, just glitch-soc-specific dependencies textually too
  close to some dependencies updated upstream.

app/services/batched_remove_status_service.rb

@@ -32,7 +32,7 @@ class BatchedRemoveStatusService < BaseService
 
     # Since we skipped all callbacks, we also need to manually
     # deindex the statuses
-    Chewy.strategy.current.update(StatusesIndex, statuses_and_reblogs) if Chewy.enabled?
+    Chewy.strategy.current.update(StatusesIndex::Status, statuses_and_reblogs) if Chewy.enabled?
 
     return if options[:skip_side_effects]