libtool: bump to version 2.4.6

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libtool/libtool.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking pgp signature
-sha256	84aac136513b009278896ffa255e4d685bcdb0cb0e5363be36adad64c986177e	libtool-2.4.5.tar.xz
+sha256	7c87a8c2c8c0fc9cd5019e402bed4292462d00a718a7cd5f11218153bf28b26f	libtool-2.4.6.tar.xz

package/libtool/libtool.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBTOOL_VERSION = 2.4.5
+LIBTOOL_VERSION = 2.4.6
 LIBTOOL_SOURCE = libtool-$(LIBTOOL_VERSION).tar.xz
 LIBTOOL_SITE = $(BR2_GNU_MIRROR)/libtool
 LIBTOOL_INSTALL_STAGING = YES