package/ell: bump to version 0.69
Changelog:
https://git.kernel.org/pub/scm/libs/ell/ell.git/tree/ChangeLog?h=0.69
Needed for bump of iwd to 3.0.
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>