Bump github.com/alecthomas/kong from 0.5.0 to 0.7.1 (closes #3)

Bumps [github.com/alecthomas/kong](https://github.com/alecthomas/kong) from 0.5.0 to 0.7.1.
- [Release notes](https://github.com/alecthomas/kong/releases)
- [Commits](https://github.com/alecthomas/kong/compare/v0.5.0...v0.7.1)

Change-Id: Iceef742c2c5582fc1c7f0eac7869f424a6ded933

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

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

Change-Id: I5b1d07d7dad6726cc11002dd0dc3a005661b89c3
diff --git a/go.mod b/go.mod
index 7bddcf3..fee87c2 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,8 @@
 go 1.16
 
 require (
-	github.com/alecthomas/kong v0.5.0
+	github.com/alecthomas/kong v0.7.1
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/stretchr/testify v1.7.0
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )