use png for email instead

Author: adelowo

internal/pkg/email/templates/billing/expired.html

@@ -49,7 +49,7 @@
             <img
               alt="Malak&#x27;s Logo"
               height="32"
-              src="https://res.cloudinary.com/dwkjke5ea/image/upload/v1742121952/malak/logos/mtnjuwfl0gb9r11pz5qg.svg"
+              src="https://res.cloudinary.com/dwkjke5ea/image/upload/v1742121952/malak/logos/mtnjuwfl0gb9r11pz5qg.png"
               style="display:block;outline:none;border:none;text-decoration:none"
               width="32" />
             <p