package/zziplib: bump to version 0.13.71

Remove upstream patches and CVE tags.

Switch the dependency to python3 added by [1].

Update indentation of hash file (two spaces).

[1] https://github.com/gdraheim/zziplib/commit/a144bec8d06302e7be11f0f46e02947b0becf574



Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>