Set statement timeout to zero in maintenance CLI (#33484)

lib/mastodon/cli/maintenance.rb

@@ -192,6 +192,7 @@ module Mastodon::CLI
       verify_schema_version!
       verify_sidekiq_not_active!
       verify_backup_warning!
+      disable_timeout!
     end
 
     def process_deduplications
@@ -251,6 +252,13 @@ module Mastodon::CLI
       fail_with_message 'Maintenance process stopped.' unless yes?('Continue? (Yes/No)')
     end
 
+    def disable_timeout!
+      # Remove server-configured timeout if present
+      database_connection.execute(<<~SQL.squish)
+        SET statement_timeout = 0
+      SQL
+    end
+
     def deduplicate_accounts!
       remove_index_if_exists!(:accounts, 'index_accounts_on_username_and_domain_lower')