chore(deps): update postgres:16.1-alpine docker digest to 1aa9f8c

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

migrate-todo/taskcafe/docker-compose.yml

@@ -26,7 +26,7 @@ services:
         traefik.http.services.tasks.loadbalancer.server.port: 3333
 
   taskcafe-postgres:
-    image: postgres:16.1-alpine@sha256:884718395ee967fc70374563f3b4d72f0c61f48f81868decb9fa452915fe070e
+    image: postgres:16.1-alpine@sha256:1aa9f8cf8c10f50489ff9f048b4a64c92292c59f51a2bb664693194c7d06b036
     volumes:
       - /mnt/taskcafe/postgres:/var/lib/postgresql/data
     env_file: secrets-postgres.env