chore(readme): upgrade logo

for light/dark mode

Author: 94noni

README.md

@@ -1,5 +1,5 @@
 <p align="center"><a href="https://symfony.com" target="_blank">
-  <img src="https://symfony.com/logos/symfony_black_02.svg">
+    <img src="https://symfony.com/logos/symfony_dynamic_01.svg" alt="Symfony Logo">
 </a></p>
 
 <h3 align="center">