[CE/SP] Hotfix 5.1.1 and 4.2.8 (#19771)

* [CE/SP] Hotfix 5.1.1 and 4.2.8

* Add script to build hotfix releases

GitOrigin-RevId: 8ece5e5fd5ec360b66069ce774319511ed82a13a

server-ce/nginx/overleaf.conf

@@ -67,6 +67,16 @@ server {
 		proxy_http_version 1.1;
   }
 
+  # block external access to metrics
+  location ~* ^/metrics/?$ {
+    return 404 'Not found';
+  }
+
+  # block external access to all health checks /health_check, /health_check/full, etc
+  location ~* ^/health_check {
+    return 404 'Not found';
+  }
+
   # Load any extra configuration for this vhost
   include /etc/nginx/vhost-extras/overleaf/*.conf;
 }