chore(deps): update docker.io/library/postgres docker tag to v18

examples/atlassian-jira-confluence/docker-compose.yml

@@ -99,7 +99,7 @@ services:
     #  - traefik.http.routers.jira.middlewares=limit-jira
 
   postgresql:
-    image: docker.io/library/postgres:16-alpine
+    image: docker.io/library/postgres:18-alpine
     container_name: jira-psql
     restart: unless-stopped
     healthcheck:

examples/authentik/docker-compose.yml

@@ -1,7 +1,7 @@
 services:
 
   postgresql:
-    image: docker.io/library/postgres:16-alpine
+    image: docker.io/library/postgres:18-alpine
     container_name: authentik-psql
     restart: unless-stopped
     healthcheck:

examples/gzctf/docker-compose.yml

@@ -29,7 +29,7 @@ services:
     #  - traefik.http.routers.ctf.middlewares=authentik@docker
 
   db:
-    image: docker.io/library/postgres:16-alpine
+    image: docker.io/library/postgres:18-alpine
     container_name: gzctf-db
     restart: always
     environment:

examples/linkwarden/docker-compose.yml

@@ -28,7 +28,7 @@ services:
     #  - traefik.http.routers.linkwarden.middlewares=local-ipwhitelist@file
 
   postgres:
-    image: docker.io/library/postgres:16-alpine
+    image: docker.io/library/postgres:18-alpine
     container_name: linkwarden-psql
     restart: unless-stopped
     healthcheck:

examples/paperless-ngx/docker-compose.yml

@@ -10,7 +10,7 @@ services:
     #  - proxy
 
   db:
-    image: docker.io/library/postgres:16-alpine
+    image: docker.io/library/postgres:18-alpine
     container_name: paperless-ngx-db
     restart: unless-stopped
     volumes: