fix(parser/log): handle non json input

internal/parser/log/parser.go

@@ -12,7 +12,9 @@ import (
 func (*Log) parse(executorResult stage.ExecutorResult, conf Conf) stage.ParserResult {
 	content := executorResult.Files[conf.Filename]
 	var data map[string]any
-	err := json.Unmarshal([]byte(content), &data)
+	contentBytes := []byte(content)
+	if json.Valid(contentBytes) {
+		err := json.Unmarshal(contentBytes, &data)
 		if err != nil {
 			slog.Error(conf.Msg, "error", err)
 			return stage.ParserResult{
@@ -30,6 +32,15 @@ func (*Log) parse(executorResult stage.ExecutorResult, conf Conf) stage.ParserRe
 			conf.Msg,
 			args...,
 		)
+	} else {
+		slog.Default().Log(
+			context.Background(),
+			slog.Level(conf.Level),
+			conf.Msg,
+			"content",
+			content,
+		)
+	}
 	return stage.ParserResult{
 		Score:   0,
 		Comment: "",