chore(deps): update dependency ntfy to v2.15.0-0

requirements.yml

@@ -31,7 +31,7 @@
   version: v1.9.4-0
   name: livekit_server
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-ntfy.git
-  version: v2.14.0-3
+  version: v2.15.0-0
   name: ntfy
 - src: git+https://github.com/devture/com.devture.ansible.role.playbook_help.git
   version: 7663e3114513e56f28d3ed762059b445c678a71a