sysstat: bump to version 11.6.1

The isag tool has been removed in version 11.5.5; no need to avoid its
installation anymore.

Add license file hash.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2 files changed