Upgrade: bump github.com/urfave/cli from 1.22.2 to 1.22.4

Bumps [github.com/urfave/cli](https://github.com/urfave/cli) from 1.22.2 to 1.22.4.
- [Release notes](https://github.com/urfave/cli/releases)
- [Changelog](https://github.com/urfave/cli/blob/master/docs/CHANGELOG.md)
- [Commits](urfave/cli@v1.22.2...v1.22.4)

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

go.mod

@@ -9,6 +9,6 @@ require (
  github.com/miekg/dns v1.1.27
  github.com/sirupsen/logrus v1.4.2
  github.com/smartystreets/goconvey v1.6.4 // indirect
- github.com/urfave/cli v1.22.2
+ github.com/urfave/cli v1.22.4
  gopkg.in/ini.v1 v1.52.0
 )

go.sum

@@ -99,6 +99,8 @@ github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJy
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/urfave/cli v1.22.2 h1:gsqYFH8bb9ekPA12kRo0hfjngWQjkJPlN9R0N78BoUo=
 github.com/urfave/cli v1.22.2/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
+github.com/urfave/cli v1.22.4 h1:u7tSpNPPswAFymm8IehJhy4uJMlUuU/GmqSkvJ1InXA=
+github.com/urfave/cli v1.22.4/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 h1:ObdrDkeb4kJdCP557AjRjq69pTHfNouLtWZG7j9rPN8=