Update python-jupyterlab-server to version 2.19.0 / rev 3 via SR 1058707
https://build.opensuse.org/request/show/1058707
by user bnavigator + dimstar_suse
- Update to 2.19.0
* Don't change language environment variable #366 (@fcollonval)
* Fix test_process_app #367 (@blink1073)
* Sync lint deps #365 (@blink1073)