fix(migration): foreign key length correction

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/nocodb/src/lib/migrations/v2/nc_013_sync_source.ts

@@ -17,7 +17,7 @@ const up = async (knex: Knex) => {
 
     table.string('project_id', 128);
     table.foreign('project_id').references(`${MetaTable.PROJECT}.id`);
-    table.string('fk_user_id', 128);
+    table.string('fk_user_id', 20);
     table.foreign('fk_user_id').references(`${MetaTable.USERS}.id`);
 
     table.timestamps(true, true);