Some dependencies / tools updates (#140)

* dockerfile: update base iamge to alpine 3.14

Signed-off-by: Carlos Panato <ctadeu@gmail.com>

* go: update dependencies

Signed-off-by: Carlos Panato <ctadeu@gmail.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.13
+FROM alpine:3.14
 
 RUN apk --no-cache add ca-certificates git
 

go.mod

@@ -4,19 +4,19 @@ go 1.16
 
 require (
 	github.com/Songmu/retry v0.1.0
-	github.com/golangci/golangci-lint v1.41.1
+	github.com/golangci/golangci-lint v1.42.1
 	github.com/google/go-github/v36 v36.0.0
-	github.com/goreleaser/goreleaser v0.172.1
+	github.com/goreleaser/goreleaser v0.183.0
 	github.com/magefile/mage v1.11.0
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/pkg/errors v0.9.1
-	github.com/spf13/cobra v1.1.3
+	github.com/spf13/cobra v1.2.1
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.8.1
+	github.com/spf13/viper v1.9.0
 	github.com/stretchr/testify v1.7.0
-	golang.org/x/oauth2 v0.0.0-20210622215436-a8dc77f794b6
-	golang.org/x/tools v0.1.4
-	helm.sh/helm/v3 v3.6.1
+	golang.org/x/oauth2 v0.0.0-20211005180243-6b3c2da341f1
+	golang.org/x/tools v0.1.7
+	helm.sh/helm/v3 v3.7.1
 )
 
 replace (