haproxy: Update HAProxy to v1.8.8

- Update haproxy download URL and hash

Signed-off-by: Christian Lachner <gladiac@gmail.com>

net/haproxy/Makefile

@@ -9,12 +9,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=haproxy
-PKG_VERSION:=1.8.7
+PKG_VERSION:=1.8.8
 PKG_RELEASE:=01
 
 PKG_SOURCE:=haproxy-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://www.haproxy.org/download/1.8/src/
-PKG_HASH:=0584a52c9a9095470be8d4216b31e7a312873752d5eb66be4eb3ce51b2875317
+PKG_HASH:=bcc05ab824bd2f89b8b21ac05459c0a0a0e02247b57ffe441d52cfe771daea92
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION)
 PKG_LICENSE:=GPL-2.0