Bump github.com/miekg/dns from 1.1.27 to 1.1.28 (#1223)

Bumps [github.com/miekg/dns](https://github.com/miekg/dns) from 1.1.27 to 1.1.28.
- [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/v1.1.27...v1.1.28)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

go.mod

@@ -20,7 +20,7 @@ require (
 	github.com/jedisct1/xsecretbox v0.0.0-20190909160646-b731c21297f9
 	github.com/k-sone/critbitgo v1.4.0
 	github.com/kardianos/service v1.0.1-0.20191211031725-3c356ae54c8a
-	github.com/miekg/dns v1.1.27
+	github.com/miekg/dns v1.1.28
 	github.com/powerman/check v1.2.1
 	golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d
 	golang.org/x/net v0.0.0-20200226121028-0de0cce0169b

go.sum

@@ -50,6 +50,8 @@ github.com/kardianos/service v1.0.1-0.20191211031725-3c356ae54c8a h1:T/nL7taPRFD
 github.com/kardianos/service v1.0.1-0.20191211031725-3c356ae54c8a/go.mod h1:8CzDhVuCuugtsHyZoTvsOBuvonN/UDBvl0kH+BUxvbo=
 github.com/miekg/dns v1.1.27 h1:aEH/kqUzUxGJ/UHcEKdJY+ugH6WEzsEBBSPa8zuy1aM=
 github.com/miekg/dns v1.1.27/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
+github.com/miekg/dns v1.1.28 h1:gQhy5bsJa8zTlVI8lywCTZp1lguor+xevFoYlzeCTQY=
+github.com/miekg/dns v1.1.28/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=