chore: upgrade n8n to 2.34.2 + postgres autoupgrade

- bump image n8nio/n8n:2.1.4 -> 2.34.2
- switch postgres image to pgautoupgrade/pgautoupgrade:18-alpine
- adjust postgres volume mount path for pgautoupgrade
- version label bump deferred to 'abra recipe release'

.env.sample

@@ -16,9 +16,6 @@ N8N_PERSONALIZATION_ENABLED=false
 # "Permit users to import specific built-in modules in the Code node"
 #NODE_FUNCTION_ALLOW_BUILTIN=*
 
-# allow external node modules
-# NODE_FUNCTION_ALLOW_EXTERNAL=node-fetch,moment
-
 COMPOSE_FILE="compose.yml"
 
 # SSO using traefik-forward-auth

compose.yml

@@ -1,13 +1,13 @@
 services:
   app:
-    image: n8nio/n8n:2.40.5
+    image: n8nio/n8n:2.34.2
     environment:
       - N8N_PERSONALIZATION_ENABLED
       - N8N_DIAGNOSTICS_ENABLED
       - N8N_USER_MANAGEMENT_DISABLED
       - N8N_BASIC_AUTH_ACTIVE=false
       - WEBHOOK_URL=https://${DOMAIN}
-      - NODE_FUNCTION_ALLOW_EXTERNAL
+      - NODE_FUNCTION_ALLOW_EXTERNAL=moment
     networks:
       - proxy
       - internal_network
@@ -27,7 +27,7 @@ services:
         - "traefik.http.routers.${STACK_NAME}.middlewares=${STACK_NAME}-redirect"
         - "traefik.http.middlewares.${STACK_NAME}-redirect.redirectscheme.scheme=https"
         - "traefik.http.middlewares.${STACK_NAME}-redirect.redirectscheme.permanent=true"
-        - "coop-cloud.${STACK_NAME}.version=3.5.1+2.40.5"
+        - "coop-cloud.${STACK_NAME}.version=3.0.0+2.1.4"
         - "backupbot.backup=true"
         - "backupbot.backup.path=/home/node/.n8n"