This happens often with Hertz, I carry a small digital tire gauge for this reason.

One thing to note, while not good, overinflated tires are better to have than underinflated tires. Tires can easily handle an extra +10 psi over the recommended cold pressure amount, they’re not going to explode.

Handling will be a little weird and the tire will certainly wear out the tread faster, but it’s no where near is as bad as driving -5 psi or more under inflated.