fix: Fix old migrations for Keto 0.8, column nit is not exists in table network

Author: DarkDrim

internal/persistence/sql/migrations/sql/20220217152313000000_nid_fk.sqlite.up.sql

@@ -1,6 +1,6 @@
 -- These tuples can't be retrieved over any API (and also not inserted by any API) because we always add a `WHERE nid = ?` clause to the queries.
 -- This DELETE statement is here to ensure that we don't run into problems where the `nid` column is not properly set. Should not happen if only the official API is used.
-DELETE FROM keto_relation_tuples WHERE nid NOT IN (SELECT nid FROM networks);
+DELETE FROM keto_relation_tuples WHERE nid NOT IN (SELECT id FROM networks);
 
 CREATE TABLE keto_relation_tuples_with_fk
 (

internal/persistence/sql/migrations/sql/20220217152313000000_nid_fk.up.sql

@@ -1,6 +1,6 @@
 -- These tuples can't be retrieved over any API (and also not inserted by any API) because we always add a `WHERE nid = ?` clause to the queries.
 -- This DELETE statement is here to ensure that we don't run into problems where the `nid` column is not properly set. Should not happen if only the official API is used.
-DELETE FROM keto_relation_tuples WHERE nid NOT IN (SELECT nid FROM networks);
+DELETE FROM keto_relation_tuples WHERE nid NOT IN (SELECT id FROM networks);
 
 ALTER TABLE keto_relation_tuples
     ADD CONSTRAINT keto_relation_tuples_nid_fk