shadowsocks-libev: bump to version 3.3.1

This should fix openwrt/packages#9346 ("shadowsocks-libev: undefined
behavior from unaligned access")

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

net/shadowsocks-libev/Makefile

@@ -13,12 +13,12 @@ include $(TOPDIR)/rules.mk
 # - check if default mode has changed from being tcp_only
 #
 PKG_NAME:=shadowsocks-libev
-PKG_VERSION:=3.3.0
+PKG_VERSION:=3.3.1
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/shadowsocks/shadowsocks-libev/releases/download/v$(PKG_VERSION)
-PKG_HASH:=9732f8b8f02ffeea261bcf15fbf104f826012f74dbee99d016b75f0894a39649
+PKG_HASH:=afd25ae5e737be385fa53364c66095c354277e98cf141b54beb2be93d9228f4f
 
 PKG_MAINTAINER:=Yousong Zhou <yszhou4tech@gmail.com>