CT MySQL: Bumped mysql version

Bumped mysql to 8.4-lts
updated auth policy to `caching_sha2_password`

CT-Files/mysql/Configs/my.cnf

@@ -1,6 +1,12 @@
 [mysqld]
 disable_log_bin
-default-authentication-plugin = mysql_native_password
+# Use legacy authentication method 
+## mysql_native_password    = ON 
+## authentication_policy    = mysql_native_password
+
+# Use recommended authentication method 
+authentication_policy   = caching_sha2_password
+
 user            = mysql
 pid-file        = /var/run/mysqld/mysqld.pid
 socket          = /var/run/mysqld/mysqld.sock