Bump github.com/miekg/dns from 1.1.48 to 1.1.50 (#48)

Bumps [github.com/miekg/dns](https://github.com/miekg/dns) from 1.1.48 to 1.1.50.
- [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/v1.1.48...v1.1.50)

---
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>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -3,7 +3,7 @@ module go.unistack.org/micro-register-mdns/v3
 go 1.16
 
 require (
-	github.com/miekg/dns v1.1.48
+	github.com/miekg/dns v1.1.50
 	go.unistack.org/micro/v3 v3.9.8
 	golang.org/x/net v0.0.0-20220225172249-27dd8689420f
 )