Maintenance: upgrade to qdm12/dns v1.7.0

- Fix rebinding protection for IPv6 mapped IPv4 networks
- Use netaddr package for DNS blacklisting

go.mod

@@ -6,11 +6,12 @@ require (
 	github.com/fatih/color v1.10.0
 	github.com/golang/mock v1.5.0
 	github.com/kyokomi/emoji v2.2.4+incompatible
-	github.com/qdm12/dns v1.6.0
+	github.com/qdm12/dns v1.7.0
 	github.com/qdm12/golibs v0.0.0-20210402232648-cfebf1e87d1b
 	github.com/qdm12/ss-server v0.1.0
 	github.com/qdm12/updated v0.0.0-20210102012151-76b7f5994638
 	github.com/stretchr/testify v1.7.0
 	github.com/vishvananda/netlink v1.1.0
 	golang.org/x/sys v0.0.0-20210514084401-e8d321eab015
+	inet.af/netaddr v0.0.0-20210511181906-37180328850c
 )