refactor: add more go linters (#970)

cmd/config_import.go

@@ -6,9 +6,10 @@ import (
 	"path/filepath"
 	"reflect"
 
+	"github.com/spf13/cobra"
+
 	"github.com/filebrowser/filebrowser/v2/auth"
 	"github.com/filebrowser/filebrowser/v2/settings"
-	"github.com/spf13/cobra"
 )
 
 func init() {
@@ -55,7 +56,7 @@ The path must be for a json or yaml file.`,
 		checkErr(err)
 
 		var rawAuther interface{}
-		if filepath.Ext(args[0]) != ".json" {
+		if filepath.Ext(args[0]) != ".json" { //nolint:goconst
 			rawAuther = cleanUpInterfaceMap(file.Auther.(map[interface{}]interface{}))
 		} else {
 			rawAuther = file.Auther