fix pipeline (#365)

Co-authored-by: Aleksandr Tolstikhin <atolstikhin@mtsbank.ru>
Reviewed-on: #365
Co-authored-by: Vasiliy Tolstov <v.tolstov@unistack.org>
Co-committed-by: Vasiliy Tolstov <v.tolstov@unistack.org>

util/reflect/reflect.go

@@ -91,7 +91,7 @@ func Merge(dst interface{}, mp map[string]interface{}, opts ...Option) error {
 	}
 
 	if mapper, ok := dst.(map[string]interface{}); ok {
-		dst = mergeMap(mapper, mp, 0)
+		mergeMap(mapper, mp, 0)
 		return nil
 	}