Update ntfy 2.3.0 -> 2.3.1

requirements.yml

@@ -28,7 +28,7 @@
 - src: git+https://gitlab.com/etke.cc/roles/grafana.git
   version: v9.4.7-1
 - src: git+https://gitlab.com/etke.cc/roles/ntfy.git
-  version: v2.3.0-0
+  version: v2.3.1-0
 - src: git+https://gitlab.com/etke.cc/roles/redis.git
   version: v7.0.10-0
 - src: git+https://gitlab.com/etke.cc/roles/etherpad.git