fix(Code Node): Switch over to vm2 fork (#7018)

[Fork is here](https://github.com/n8n-io/vm2). Currently there are no
modifications in it.

packages/nodes-base/nodes/Code/test/Code.node.test.ts

@@ -1,5 +1,5 @@
 import { anyNumber, mock } from 'jest-mock-extended';
-import { NodeVM } from 'vm2';
+import { NodeVM } from '@n8n/vm2';
 import type { IExecuteFunctions, IWorkflowDataProxyData } from 'n8n-workflow';
 import { NodeHelpers } from 'n8n-workflow';
 import { normalizeItems } from 'n8n-core';