NPM Relase action broken

Dieses Issue hat noch niemand übernommen.

There seem to be two issues:

1. `jupyterlab` is not installed for the npm section

```
$ jupyter labextension build --development True .
/bin/sh: 1: jupyter: not found
error Command failed with exit code 127.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
error Command failed with exit code 127.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
error Command failed with exit code 127.
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
```

2. Some sort of issue with NPM keys

```
npm notice
npm ERR! code ENEEDAUTH
npm ERR! need auth This command requires you to be logged in to https://registry.npmjs.org/
npm ERR! need auth You need to authorize this machine using `npm adduser`

npm ERR! A complete log of this run can be found in:
npm ERR! /home/runner/.npm/_logs/2022-04-13T18_03_18_823Z-debug-0.log
Error: Process completed with exit code 1.
```

1 is an easy fix, we just need to `pip install jupyterlab`

2. I think will require intervention from @tacaswell or someone else with the power mess around with repo secrets

Beginne mit der Überprüfung des npm-Abschnitts der Release-Action und ihrer Installationsschritte; prüfe anschließend die npm-Authentifizierungskonfiguration und die Repository-Secrets. Erledigt ist die Aufgabe, wenn die Action jupyterlab während des npm-Builds und der Veröffentlichung ohne den ENEEDAUTH-Fehler finden kann.

Vom Indexierungsmodell aus dem Issue-Text verfasst.