Update sponsors of Symfony 7.0: Shopware, Sulu and Les-Tilleuls + Sensiolabs for Messenger & SymfonyCasts for Security components

Author: nicolas-grekas

README.md

@@ -15,7 +15,7 @@ $ composer require symfony/security-http
 Sponsor
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-The Security component for Symfony 6.4 is [backed][1] by [SymfonyCasts][2].
+The Security component for Symfony 7.0 is [backed][1] by [SymfonyCasts][2].
 
 Learn Symfony faster by watching real projects being built and actively coding
 along with them. SymfonyCasts bridges that learning gap, bringing you video