Merge commit '1e3b19230a48174acf524cf1a9f5a498e220ea7d' into glitch-soc/merge-upstream

Conflicts:
- `app/models/account.rb`:
  Upstream added new validations close to lines on which glitch-soc had
  modified validations to handle custom limits set through environment
  variables.
  Ported upstream changes.
- `config/initializers/content_security_policy.rb`:
  Upstream added `AZURE_ALIAS_HOST`. Glitch-soc's version of the file is
  completely different.
  Added `AZURE_ALIAS_HOST` to our version of the file.

app/services/activitypub/process_account_service.rb

@@ -79,7 +79,7 @@ class ActivityPub::ProcessAccountService < BaseService
 
     set_immediate_protocol_attributes!
 
-    @account.save
+    @account.save!
   end
 
   def update_account