Revert "Deactivate the use of blake2s_256 in Mozilla"
Revert "Deactivate the use of blake2s_256 in Mozilla"

This reverts commit b90019d66bcfccc42fca6892d6280c8ab5532754.

mitls/hacl-star,mitls/hacl-star,mitls/hacl-star,mitls/hacl-star,mitls/hacl-star,mitls/hacl-star,mitls/hacl-star,mitls/hacl-star,mitls/hacl-star