package/z3: bump to version 4.13.0

For change log since 4.12.5, see:
https://github.com/Z3Prover/z3/blob/z3-4.13.0/RELEASE_NOTES.md#version-4130

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2 files changed