fix(pkg): errorlint linter

#### Description

errorlint linter in pkg

Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>

pkg/chart/common/capabilities.go

@@ -157,7 +157,7 @@ func makeDefaultCapabilities() (*Capabilities, error) {
 
 	v, err := semver.NewVersion(vstr)
 	if err != nil {
-		return nil, fmt.Errorf("unable to parse k8s.io/client-go version %q: %v", vstr, err)
+		return nil, fmt.Errorf("unable to parse k8s.io/client-go version %q: %w", vstr, err)
 	}
 
 	kubeVersionMajor := v.Major() + 1

pkg/cmd/template.go

@@ -80,7 +80,7 @@ func newTemplateCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 			if kubeVersion != "" {
 				parsedKubeVersion, err := common.ParseKubeVersion(kubeVersion)
 				if err != nil {
-					return fmt.Errorf("invalid kube version '%s': %s", kubeVersion, err)
+					return fmt.Errorf("invalid kube version '%s': %w", kubeVersion, err)
 				}
 				client.KubeVersion = parsedKubeVersion
 			}

pkg/downloader/chart_downloader.go

@@ -380,7 +380,7 @@ func (c *ChartDownloader) ResolveChartVersion(ref, version string) (string, *url
 		if err != nil {
 			// If there is no special config, return the default HTTP client and
 			// swallow the error.
-			if err == ErrNoOwnerRepo {
+			if errors.Is(err, ErrNoOwnerRepo) {
 				// Make sure to add the ref URL as the URL for the getter
 				c.Options = append(c.Options, getter.WithURL(ref))
 				return "", u, nil

pkg/strvals/literal_parser.go

@@ -106,7 +106,7 @@ func (t *literalParser) key(data map[string]interface{}, nestedNameLevel int) (r
 		case lastRune == '=':
 			// found end of key: swallow the '=' and get the value
 			value, err := t.val()
-			if err == nil && err != io.EOF {
+			if err == nil && !errors.Is(err, io.EOF) {
 				return err
 			}
 			set(data, string(key), string(value))