Change product-is-unavailable message on product page

Hi,

Is it possible to modify the following message? If a customer (or competitor) enters a huge number in the product page qty box, they can see exactly how many we have in stock. I’d like to change this message so that it doesn’t show our inventory levels and will instead say: “Contact us at our-email for bulk pricing”.

I can see that the message is displayed in the product-form.liquid on the following line:

How can I modify the value of product-is-unavailable? I can’t seem to find it anywhere in the code!

Thanks!