FIX selecting price type

selecting the wanted index doesn't trigger a change event which is necessary to update  internal variables regarding the price type

src/kleinanzeigen_bot/web_scraping_mixin.py

@@ -552,6 +552,7 @@ async def web_select(self, selector_type:By, selector_value:str, selected_value:
  {{
  if(element.options[i].value == "{selected_value}") {{
  element.selectedIndex = i;
+ element.dispatchEvent(new Event('change', {{ bubbles: true }}));
  break;
  }}
  }}