Instant Pot Herbed Turkey Breast and Gravy

vegetable oil, such as canola or olive oil

lbs (1.4-1.8 kg) skin-on, bone-in turkey breast

kosher salt

ground black pepper

poultry seasoning

medium yellow (cooking) onion, peeled and quarted

large carrot, roughly chopped

stalkes (pieces) celery, roughly chopped

garlic, peeled and left whole

stems parsely

stems rosemary

sage leaves

chicken broth

corn starch

tsbp cold water