pmb.chroot.apk_static: use sha256 sig for verification
Folks using pmb v2 on Fedora and other distros that disabled sha1 in openssl will need this in order to run pmb successfully.
Backported from 7a299b3f
Folks using pmb v2 on Fedora and other distros that disabled sha1 in openssl will need this in order to run pmb successfully.
Backported from 7a299b3f