fix: koillection not serving big collections

modules/nixos/server/koillection.nix

@@ -119,6 +119,11 @@ in
           locations = {
             "/" = {
               proxyPass = "http://${serviceName}";
+              extraConfig = ''
+                proxy_buffer_size          128k;
+                proxy_buffers              4 256k;
+                proxy_busy_buffers_size    256k;
+              '';
             };
           };
         };