Bump github.com/alecthomas/kong from 0.2.12 to 0.2.15

Bumps [github.com/alecthomas/kong](https://github.com/alecthomas/kong) from 0.2.12 to 0.2.15.
- [Release notes](https://github.com/alecthomas/kong/releases)
- [Commits](alecthomas/kong@v0.2.12...v0.2.15)

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

go.mod

@@ -1,7 +1,7 @@
 module github.com/lucagrulla/cw
 
 require (
-	github.com/alecthomas/kong v0.2.12
+	github.com/alecthomas/kong v0.2.15
 	github.com/aws/aws-sdk-go-v2 v1.1.0
 	github.com/aws/aws-sdk-go-v2/config v1.1.0
 	github.com/aws/aws-sdk-go-v2/service/cloudwatchlogs v1.1.0

go.sum

@@ -1,5 +1,6 @@
 github.com/alecthomas/kong v0.2.12 h1:X3kkCOXGUNzLmiu+nQtoxWqj4U2a39MpSJR3QdQXOwI=
 github.com/alecthomas/kong v0.2.12/go.mod h1:kQOmtJgV+Lb4aj+I2LEn40cbtawdWJ9Y8QLq+lElKxE=
+github.com/alecthomas/kong v0.2.15/go.mod h1:kQOmtJgV+Lb4aj+I2LEn40cbtawdWJ9Y8QLq+lElKxE=
 github.com/aws/aws-sdk-go-v2 v1.1.0 h1:sKP6QWxdN1oRYjl+k6S3bpgBI+XUx/0mqVOLIw4lR/Q=
 github.com/aws/aws-sdk-go-v2 v1.1.0/go.mod h1:smfAbmpW+tcRVuNUjo3MOArSZmW72t62rkCzc2i0TWM=
 github.com/aws/aws-sdk-go-v2/config v1.1.0 h1:f3QVGpAcKrWpYNhKB8hE/buMjcfei95buQ5xdr/xYcU=