Bump go version & fix lint errors (#21)

Signed-off-by: Florian Hopfensperger <f.hopfensperger@gmail.com>

cmd/root_test.go

@@ -3,7 +3,6 @@ package cmd
 import (
 	"bytes"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -98,7 +97,7 @@ func TestExecute(t *testing.T) {
 	cmd.SetArgs([]string{"--version"})
 	Execute("0.0.0")
 
-	out, _ := ioutil.ReadAll(b)
+	out, _ := io.ReadAll(b)
 	assert.Equal(t, "v0.0.0\n", string(out))
 }
 

go.mod

@@ -1,9 +1,17 @@
 module github.com/fhopfensperger/json-log-to-human-readable
 
-go 1.16
+go 1.17
 
 require (
 	github.com/pkg/errors v0.9.1
 	github.com/spf13/cobra v1.2.1
 	github.com/stretchr/testify v1.7.0
 )
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+)