Bump github.com/miekg/dns from 1.1.39 to 1.1.40

Bumps [github.com/miekg/dns](https://github.com/miekg/dns) from 1.1.39 to 1.1.40.
- [Release notes](https://github.com/miekg/dns/releases)
- [Changelog](https://github.com/miekg/dns/blob/master/Makefile.release)
- [Commits](miekg/dns@v1.1.39...v1.1.40)

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/hashicorp/go-multierror v1.1.0
 	github.com/jcmturner/gokrb5/v8 v8.4.2
 	github.com/jinzhu/copier v0.2.4
-	github.com/miekg/dns v1.1.39
+	github.com/miekg/dns v1.1.40
 	github.com/openshift/gssapi v0.0.0-20161010215902-5fb4217df13b
 	github.com/stretchr/testify v1.7.0
 	golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83 // indirect

go.sum

@@ -28,8 +28,8 @@ github.com/jcmturner/rpc/v2 v2.0.3 h1:7FXXj8Ti1IaVFpSAziCZWNzbNuZmnvw/i6CqLNdWfZ
 github.com/jcmturner/rpc/v2 v2.0.3/go.mod h1:VUJYCIDm3PVOEHw8sgt091/20OJjskO/YJki3ELg/Hc=
 github.com/jinzhu/copier v0.2.4 h1:dT3tI+8GzU8DjJFCj9mLYtjfRtUmK7edauduQdcZCpI=
 github.com/jinzhu/copier v0.2.4/go.mod h1:24xnZezI2Yqac9J61UC6/dG/k76ttpq0DdJI3QmUvro=
-github.com/miekg/dns v1.1.39 h1:6dRfDGnHiXOMmTZkwWANy7bBXXlKls5Qu+pn+Ue0TLo=
-github.com/miekg/dns v1.1.39/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
+github.com/miekg/dns v1.1.40 h1:pyyPFfGMnciYUk/mXpKkVmeMQjfXqt3FAJ2hy7tPiLA=
+github.com/miekg/dns v1.1.40/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
 github.com/openshift/gssapi v0.0.0-20161010215902-5fb4217df13b h1:it0YPE/evO6/m8t8wxis9KFI2F/aleOKsI6d9uz0cEk=
 github.com/openshift/gssapi v0.0.0-20161010215902-5fb4217df13b/go.mod h1:tNrEB5k8SI+g5kOlsCmL2ELASfpqEofI0+FLBgBdN08=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=