use filepath.Clean to fix gosec G304

internal/config/config.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"path/filepath"
 )
 
 type Config struct {
@@ -13,6 +14,8 @@ type Config struct {
 }
 
 func NewConfig(path string) (Config, error) {
+	path = filepath.Clean(path)
+
 	data, err := os.ReadFile(path)
 	if err != nil {
 		return Config{}, fmt.Errorf(