Bump github.com/spf13/cobra from 1.1.3 to 1.2.1 (#54)

Bumps [github.com/spf13/cobra](https://github.com/spf13/cobra) from 1.1.3 to 1.2.1.
- [Release notes](https://github.com/spf13/cobra/releases)
- [Changelog](https://github.com/spf13/cobra/blob/master/CHANGELOG.md)
- [Commits](spf13/cobra@v1.1.3...v1.2.1)

---
updated-dependencies:
- dependency-name: github.com/spf13/cobra
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

go.mod

@@ -8,8 +8,7 @@ require (
 	github.com/saracen/go7z v0.0.0-20191010121135-9c09b6bd7fda
 	github.com/saracen/go7z-fixtures v0.0.0-20190623165746-aa6b8fba1d2f // indirect
 	github.com/saracen/solidblock v0.0.0-20190426153529-45df20abab6f // indirect
-	github.com/spf13/cobra v1.1.3
+	github.com/spf13/cobra v1.2.1
 	github.com/ulikunitz/xz v0.5.7 // indirect
-	golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae // indirect
 	golang.org/x/text v0.3.6
 )