revert: fix nginx config with proper outpost url

nginx/nginx.conf

@@ -30,7 +30,7 @@ server {
 
   # all requests to /outpost.goauthentik.io must be accessible without authentication
     location /outpost.goauthentik.io {
-        proxy_pass              https://auth.staging.graphpolaris.com/;
+        proxy_pass              https://auth.staging.graphpolaris.com/outpost.goauthentik.io;
         # ensure the host of this vserver matches your external URL you've configured
         # in authentik
         proxy_set_header        Host $host;