chore(deps): update docker.io/library/mysql docker tag to 8.4

docker-compose/ansiblesemaphore/compose.yaml

@@ -4,7 +4,7 @@ volumes:
     driver: local
 services:
   mysql:
-    image: docker.io/library/mysql:8.3
+    image: docker.io/library/mysql:8.4
     hostname: mysql
     volumes:
       - semaphore-mysql:/var/lib/mysql