Update app version [skip ci]

apps/mysql/8.4.2/config/my.cnf

@@ -0,0 +1,20 @@
+[mysqld]
+host_cache_size=0
+skip-name-resolve
+datadir=/var/lib/mysql
+socket=/var/run/mysqld/mysqld.sock
+user=mysql
+
+mysql_native_password=ON
+character_set_server=utf8mb4
+collation_server=utf8mb4_unicode_ci
+lower_case_table_names=1
+group_concat_max_len=1024000
+log_bin_trust_function_creators=1
+
+secure_file_priv=
+pid_file=/var/run/mysqld/mysqld.pid
+[client]
+socket=/var/run/mysqld/mysqld.sock
+
+!includedir /etc/mysql/conf.d/