ddns-scripts: update to 2.8.4

Bump PKG_VERSION for the ddns-scripts changes and reset PKG_RELEASE to
1 as requested.

Signed-off-by: shaoxia <admin@shaoxia.xyz>

Author: user1121114685

net/ddns-scripts/Makefile

@@ -7,8 +7,8 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ddns-scripts
-PKG_VERSION:=2.8.3
-PKG_RELEASE:=8
+PKG_VERSION:=2.8.4
+PKG_RELEASE:=1
 
 PKG_LICENSE:=GPL-2.0