Update Nginx image version to 1.31.2-latest

Updated NGINX base image version from 1.31.0-latest to 1.31.2-latest.

Author: giohappy

.env.sample

@@ -2,7 +2,7 @@ COMPOSE_PROJECT_NAME=geonode_project
 DOCKER_ENV=production
 
 GEONODE_BASE_IMAGE_VERSION=master
-NGINX_BASE_IMAGE_VERSION=1.31.0-latest
+NGINX_BASE_IMAGE_VERSION=1.31.2-latest
 LETSENCRYPT_BASE_IMAGE_VERSION=2.6.0-latest
 GEOSERVER_BASE_IMAGE_VERSION=2.28.x-latest
 GEOSERVER_DATA_BASE_IMAGE_VERSION=2.28.x-latest
@@ -116,4 +116,4 @@ MEMCACHED_LOCATION=memcached:11211
 
 
 # PostgreSQL
-POSTGRESQL_MAX_CONNECTIONS=200
+POSTGRESQL_MAX_CONNECTIONS=200