fix: use correct table name for sync_group

migrations/2025-02-23-095541_initial/down.sql

@@ -2,6 +2,8 @@ drop table episode_actions;
 
 drop table device_subscriptions;
 
+drop table sync_groups;
+
 drop table devices;
 
 drop table sessions;

migrations/2025-02-23-095541_initial/up.sql

@@ -25,7 +25,7 @@ create table devices (
         references users (id)
         on delete cascade,
     sync_group_id bigint
-        references sync_group (id)
+        references sync_groups (id)
         on delete set null,
 
     caption text not null,