www/passenger: Update to 5.2.2.

- Adds an option for dumping the web server config manifest to a given
  file: `PassengerDumpConfigManifest` (Apache) /
  `passenger_dump_config_manifest` (Nginx). This option is mostly useful
  for Passenger developers.
- [Nginx] Fixes support for configurations that have two
  `passenger_base_uri` options in a single virtual host, without
  corresponding `passenger_app_group_name` and `passenger_app_root`
  directives. Closes GH-2043.
- [Enterprise] Improved support for RAM-based pricing on Heroku (now
  using officially recommended memory limit reporting via CGROUP).
- (added in CHANGELOG after release) Four new options to connect to
  the new Fuse Panel: admin_panel_url, admin_panel_auth_type,
  admin_panel_username, admin_panel_password

(fhajny)