update golangci-lint and replace deprecated calls to io/ioutil

deb/changes.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sort"
@@ -39,7 +38,7 @@ func NewChanges(path string) (*Changes, error) {
 		ChangesName: filepath.Base(path),
 	}
 
-	c.TempDir, err = ioutil.TempDir(os.TempDir(), "aptly")
+	c.TempDir, err = os.MkdirTemp(os.TempDir(), "aptly")
 	if err != nil {
 		return nil, err
 	}

deb/format.go

@@ -136,7 +136,7 @@ func isMultilineField(field string, isRelease bool) bool {
 
 // Write single field from Stanza to writer.
 //
-//nolint: interfacer
+// nolint: interfacer
 func writeField(w *bufio.Writer, field, value string, isRelease bool) (err error) {
 	if !isMultilineField(field, isRelease) {
 		_, err = w.WriteString(field + ": " + value + "\n")

deb/publish.go

@@ -5,7 +5,6 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"os"
 	"path/filepath"
@@ -596,7 +595,7 @@ func (p *PublishedRepo) Publish(packagePool aptly.PackagePool, publishedStorageP
 	}
 
 	var tempDir string
-	tempDir, err = ioutil.TempDir(os.TempDir(), "aptly")
+	tempDir, err = os.MkdirTemp(os.TempDir(), "aptly")
 	if err != nil {
 		return err
 	}

deb/remote_test.go

@@ -3,7 +3,6 @@ package deb
 import (
 	"errors"
 	"io"
-	"io/ioutil"
 	"os"
 	"sort"
 
@@ -38,7 +37,7 @@ func (n *NullVerifier) VerifyClearsigned(clearsigned io.Reader, hint bool) (*pgp
 }
 
 func (n *NullVerifier) ExtractClearsigned(clearsigned io.Reader) (text *os.File, err error) {
-	text, _ = ioutil.TempFile("", "aptly-test")
+	text, _ = os.CreateTemp("", "aptly-test")
 	io.Copy(text, clearsigned)
 	text.Seek(0, 0)
 	os.Remove(text.Name())