busybox: update to 1.31.1

Update busybox to 1.31.1

Small bug fix release. Fixes for dc, ash (PS1 expansion fix),
hush, dpkg-deb, telnet and wget.

No need to refresh patches or config.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

package/utils/busybox/Makefile

@@ -8,14 +8,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=busybox
-PKG_VERSION:=1.31.0
+PKG_VERSION:=1.31.1
 PKG_RELEASE:=1
 PKG_FLAGS:=essential
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=https://www.busybox.net/downloads \
 		http://sources.buildroot.net
-PKG_HASH:=0e4925392fd9f3743cc517e031b68b012b24a63b0cf6c1ff03cce7bb3846cc99
+PKG_HASH:=d0f940a72f648943c1f2211e0e3117387c31d765137d92bd8284a3fb9752a998
 
 PKG_BUILD_DEPENDS:=BUSYBOX_CONFIG_PAM:libpam
 PKG_BUILD_PARALLEL:=1