Bump github.com/miekg/dns from 1.1.43 to 1.1.45

Bumps [github.com/miekg/dns](https://github.com/miekg/dns) from 1.1.43 to 1.1.45.
- [Release notes](https://github.com/miekg/dns/releases)
- [Changelog](https://github.com/miekg/dns/blob/master/Makefile.release)
- [Commits](https://github.com/miekg/dns/compare/v1.1.43...v1.1.45)

---
updated-dependencies:
- dependency-name: github.com/miekg/dns
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/google/go-cmp v0.5.6
 	github.com/gorilla/websocket v1.4.2
 	github.com/lucas-clemente/quic-go v0.24.0
-	github.com/miekg/dns v1.1.43
+	github.com/miekg/dns v1.1.45
 	github.com/pelletier/go-toml v1.9.4
 	github.com/pires/go-proxyproto v0.6.1
 	github.com/refraction-networking/utls v1.0.0
@@ -39,7 +39,6 @@ require (
 	github.com/onsi/ginkgo v1.16.5 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
-	github.com/stretchr/objx v0.3.0 // indirect
 	golang.org/x/mod v0.5.1 // indirect
 	golang.org/x/text v0.3.7 // indirect
 	golang.org/x/tools v0.1.8 // indirect