L2SS-2069: Update jupyterlab docker image source and configuration
Jupyter no longer hosts docker images with docker.io, and instead has chosen to host them on quay.io. This PR changes the build source for the jupyter-lab docker image to pull from this new source. As of committing, this will install Jupyter Lab Version 4.2.6.
As a result of this, the configuration also required updates as a result of Jupyter moving functionality to jupyter-server[0].
I've performed surface level testing (the image builds and launches a jupyterlab instance with the default files available), but haven't tested much further than that.
[0] https://jupyter-server.readthedocs.io/en/stable/operators/migrate-from-nbserver.html