Update mysql Docker tag to v8.4

Author: renovate-bot

14/mysql-tomcat/docker-compose.yml

@@ -46,7 +46,7 @@ services:
       - bridge
   # The container that runs the database (mysql)
   db:
-    image: "mysql:8.3"
+    image: "mysql:8.4"
     container_name: xwiki-mysql-db
     # - Provide a name instead of an auto-generated id for the mysql data, to make it simpler to identify in
     # 'docker volume ls'

15/mysql-tomcat/docker-compose.yml

@@ -46,7 +46,7 @@ services:
       - bridge
   # The container that runs the database (mysql)
   db:
-    image: "mysql:8.3"
+    image: "mysql:8.4"
     container_name: xwiki-mysql-db
     # - Provide a name instead of an auto-generated id for the mysql data, to make it simpler to identify in
     # 'docker volume ls'

16.4/mysql-tomcat/docker-compose.yml

@@ -46,7 +46,7 @@ services:
       - bridge
   # The container that runs the database (mysql)
   db:
-    image: "mysql:8.3"
+    image: "mysql:8.4"
     container_name: xwiki-mysql-db
     # - Provide a name instead of an auto-generated id for the mysql data, to make it simpler to identify in
     # 'docker volume ls'

16/mysql-tomcat/docker-compose.yml

@@ -46,7 +46,7 @@ services:
       - bridge
   # The container that runs the database (mysql)
   db:
-    image: "mysql:8.3"
+    image: "mysql:8.4"
     container_name: xwiki-mysql-db
     # - Provide a name instead of an auto-generated id for the mysql data, to make it simpler to identify in
     # 'docker volume ls'