EBR-90: add node version to build.yml

.github/workflows/build.yml

@@ -19,6 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: [ "3.8", "3.9", "3.10", "3.11" ]
+        node-version: ["20.x"]
 
     steps:
     - name: Checkout
@@ -28,7 +29,7 @@ jobs:
       uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
 
     - name: Install dependencies
-      run: python -m pip install -U "jupyterlab>=4.0.0,<5" ebrains-drive pytest pytest-mock pytest-jupyter pytest_tornasync pytest-cov
+      run: python -m pip install -U "jupyterlab>=4.0.0,<5" ebrains-drive pytest pytest-mock "pytest-jupyter[server]>=0.6.0" pytest_tornasync pytest-cov
 
     - name: Lint the extension
       run: |