installkernel: bump dracut requirement

--conf-dir was introduced in 104, but lets bump to 106 so the
behaviour of +systemd and -systemd is the same

Bug: https://bugs.gentoo.org/949285
Signed-off-by: Nowa Ammerlaan <[email protected]>

Author: Nowa-Ammerlaan

installkernel-9999.ebuild

@@ -46,7 +46,7 @@ REQUIRED_USE="
 RDEPEND="
 	!<=sys-kernel/installkernel-systemd-3
 	dracut? (
-		>=sys-kernel/dracut-103
+		>=sys-kernel/dracut-106
 		uki? (
 			|| (
 				sys-apps/systemd[boot(-)]