[nan-103] add composite index (NangoHQ#1395)

* [nan-103] add composite index

* [nan-103] update composite index

* [nan-103] run migrations concurrently

packages/shared/lib/db/migrations/20231205184840_records_composite_index.cjs

@@ -0,0 +1,11 @@
+const tableName = '_nango_sync_data_records';
+
+exports.config = { transaction: false };
+
+exports.up = function(knex) {
+  return knex.schema.raw('CREATE INDEX CONCURRENTLY idx_nango_records_composite ON nango._nango_sync_data_records (nango_connection_id, model, created_at, id)');
+};
+
+exports.down = function(knex) {
+  return knex.schema.raw('DROP INDEX CONCURRENTLY idx_nango_records_composite');
+};