Update dependency postgres to v14 (#36)

Co-authored-by: Renovate Bot <[email protected]>

docker-compose.yml

@@ -46,7 +46,7 @@ services:
     healthcheck:
       test: curl -f http://localhost:8080
   postgres:
-    image: postgres:13-alpine
+    image: postgres:14-alpine
     volumes:
       - netbox-postgres-data:/var/lib/postgresql/data
     environment: