require the use of node prefix on native imports

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/events-backend/src/migrations.test.ts

@@ -16,7 +16,7 @@
 
 import { Knex } from 'knex';
 import { TestDatabases } from '@backstage/backend-test-utils';
-import fs from 'fs';
+import fs from 'node:fs';
 
 const migrationsDir = `${__dirname}/../migrations`;
 const migrationsFiles = fs.readdirSync(migrationsDir).sort();