LUKS and quantum computing

If we use LUKS encryption with SHA-256 configured (i.e. the default), is this considered safe against attacks by quantum computers? 

I ask because NIST suggests SHA512 in general for quantum safe algorithms (see "old Q17" in https://csrc.nist.gov/projects/post-quantum-cryptography/faqs) and we want to be LUKS quantum safe now and for several years to come, even if no practical attacks currently exist.

Note, the cipher we use is "aes-xts-plain64" so we have no question about this as AES with 256-bit keys is considered quantum safe. 

Thank you.