upgrade jupyter-server

[maciejskorski]

This patch upgrades jupyter_server 🆙 to version 2.x

• Fixes package jupyter-server-terminals not working #1247
• Fixes Mismatch of jupyter-server version #1246

Note: GitHub actions here demonstrate that images build and publish

[google-cla]

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[maciejskorski]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

thanks @google-cla bot, done 😄

[djherbis]

Sure, we've been using the default version usually that comes from our base image since that usually has to be compatible with certain other parts of Cloud/Kaggle. I'll run some tests once this image builds though to verify if this is fine.

Thanks for contributing!

[maciejskorski]

Sure, we've been using the default version usually that comes from our base image since that usually has to be compatible with certain other parts of Cloud/Kaggle. I'll run some tests once this image builds though to verify if this is fine.

Thanks for contributing!

Dear @djherbis , it's been my pleasure and thanks for taking this enourmous effort to put this huge collection of packages together 👏 , it indeed helps data scientists to collaborate 😄