package/scrypt: bump to version 1.3.1
Update hash of COPYRIGHT (update in year:
https://github.com/Tarsnap/scrypt/commit/8584d33ad75eb6c920df13e17a6af91c1c4576d0)
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>