Update postgres:16.4-alpine Docker digest to 5660c2c

plausible/docker-compose.yml

@@ -7,7 +7,7 @@ networks:
 services:
   plausible_db:
     restart: unless-stopped
-    image: postgres:16.4-alpine@sha256:77987f53a748f1d1f5d300026c20e302718089c33d58ad4e0742d7b1661d5c7b
+    image: postgres:16.4-alpine@sha256:5660c2cbfea50c7a9127d17dc4e48543eedd3d7a41a595a2dfa572471e37e64c
     volumes:
       - /home/aosus/plausible/postgres:/var/lib/postgresql/data
     environment: