Make optional for raw procedures

Author: marijnvanwezel

src/Expressions/Procedures/Procedure.php

@@ -38,7 +38,7 @@ abstract class Procedure implements QueryConvertible
      * @param string $functionName The name of the function to call
      * @param AnyType|AnyType[]|bool|bool[]|float|float[]|int|int[]|mixed[]|mixed[][]|Pattern|Pattern[]|string|string[]|(AnyType|bool|float|int|mixed[]|Pattern|string)[] $parameters   The parameters to pass to the function call
      */
-    public static function raw(string $functionName, $parameters): Raw
+    public static function raw(string $functionName, $parameters = []): Raw
     {
         if (!is_array($parameters)) {
             $parameters = [$parameters];