fix(action): update CONFIG_IP_SET_MAX to use integer value

.github/actions/networking/action.yml

@@ -65,7 +65,7 @@ runs:
         CONFIG_IP_SET_HASH_NETPORT=y
         CONFIG_IP_SET_HASH_NETIFACE=y
         CONFIG_IP_SET_LIST_SET=y
-        CONFIG_IP_SET_MAX="256"
+        CONFIG_IP_SET_MAX=256
 
         CONFIG_TCP_CONG_ADVANCED=y
         CONFIG_TCP_CONG_BBR=y