Update aptly docker image to fix vulnerabilities

Related-Prod: PROD-37151
Change-Id: I3018eb584e03d483448ee68cd3406391f3ed4626
diff --git a/defaults/docker_images.yml b/defaults/docker_images.yml
index 75751ec..4e5500f 100644
--- a/defaults/docker_images.yml
+++ b/defaults/docker_images.yml
@@ -5,7 +5,7 @@
     docker_image_alertmanager_tag: "2019.2.21"
     docker_image_aptly_base_tag: "2019.2.24"
     docker_image_aptly_public_tag: "2019.2.24"
-    docker_image_aptly_publisher_tag: "2019.2.23"
+    docker_image_aptly_publisher_tag: "2019.2.24"
     docker_image_cockroachdb_tag: "v2.1.1"
     docker_image_compose_tag: "1.17.1"
     docker_image_cvp_rally_tag: "2019.2.5"