Bump github.com/urfave/cli/v2 from 2.1.1 to 2.2.0

Bumps [github.com/urfave/cli/v2](https://github.com/urfave/cli) from 2.1.1 to 2.2.0.
- [Release notes](https://github.com/urfave/cli/releases)
- [Changelog](https://github.com/urfave/cli/blob/master/docs/CHANGELOG.md)
- [Commits](https://github.com/urfave/cli/compare/v2.1.1...v2.2.0)

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

go.mod

@@ -35,7 +35,7 @@ require (
 	github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304 // indirect
 	github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c // indirect
 	github.com/stretchr/testify v1.6.1
-	github.com/urfave/cli/v2 v2.1.1
+	github.com/urfave/cli/v2 v2.2.0
 	github.com/writeas/activity v0.1.2
 	github.com/writeas/activityserve v0.0.0-20200409150223-d7ab3eaa4481
 	github.com/writeas/go-strip-markdown v2.0.1+incompatible

go.sum

@@ -158,6 +158,8 @@ github.com/tsenart/deadcode v0.0.0-20160724212837-210d2dc333e9 h1:vY5WqiEon0ZSTG
 github.com/tsenart/deadcode v0.0.0-20160724212837-210d2dc333e9/go.mod h1:q+QjxYvZ+fpjMXqs+XEriussHjSYqeXVnAdSV1tkMYk=
 github.com/urfave/cli/v2 v2.1.1 h1:Qt8FeAtxE/vfdrLmR3rxR6JRE0RoVmbXu8+6kZtYU4k=
 github.com/urfave/cli/v2 v2.1.1/go.mod h1:SE9GqnLQmjVa0iPEY0f1w3ygNIYcIJ0OKPMoW2caLfQ=
+github.com/urfave/cli/v2 v2.2.0 h1:JTTnM6wKzdA0Jqodd966MVj4vWbbquZykeX1sKbe2C4=
+github.com/urfave/cli/v2 v2.2.0/go.mod h1:SE9GqnLQmjVa0iPEY0f1w3ygNIYcIJ0OKPMoW2caLfQ=
 github.com/writeas/activity v0.1.2 h1:Y12B5lIrabfqKE7e7HFCWiXrlfXljr9tlkFm2mp7DgY=
 github.com/writeas/activity v0.1.2/go.mod h1:mYYgiewmEM+8tlifirK/vl6tmB2EbjYaxwb+ndUw5T0=
 github.com/writeas/activityserve v0.0.0-20200409150223-d7ab3eaa4481 h1:BiSivIxLQFcKoUorpNN3rNwwFG5bITPnqUSyIccfdh0=