util-linux: Update to version 2.37.3

This release fixes two security mount(8) and umount(8) issues:

CVE-2021-3996
    Improper UID check in libmount allows an unprivileged user to unmount FUSE
    filesystems of users with similar UID.

CVE-2021-3995
    This issue is related to parsing the /proc/self/mountinfo file allows an
    unprivileged user to unmount other user's filesystems that are either
    world-writable themselves or mounted in a world-writable directory.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

package/utils/util-linux/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=util-linux
-PKG_VERSION:=2.37
+PKG_VERSION:=2.37.3
 PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@KERNEL/linux/utils/$(PKG_NAME)/v2.37
-PKG_HASH:=bd07b7e98839e0359842110525a3032fdb8eaf3a90bedde3dd1652d32d15cce5
+PKG_HASH:=590c592e58cd6bf38519cb467af05ce6a1ab18040e3e3418f24bcfb2f55f9776
 PKG_CPE_ID:=cpe:/a:kernel:util-linux
 
 PKG_LICENSE:=GPL-2.0-only