Use latest stable MySQL service container

Author: grooverdan

examples/migration-8.0/compose-mysql8.0.yml

@@ -29,7 +29,7 @@ services:
       MYSQL_PASSWORD: ${DB_PASSWORD}
       MYSQL_DATABASE: ${DB_DATABASE}
     container_name: ${MYSQL_name}
-    image: mysql:8.3.0
+    image: mysql:8.4.7
     healthcheck:
       test: ["CMD", "mysqladmin", "ping", "-h", "127.0.0.1", "--silent"]
       interval: 20s