add node to test setup

.github/workflows/tests.yml

@@ -57,13 +57,18 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20.x'
+
       - name: Install apt packages (Linux with python 3.12 only)
         if: runner.os == 'Linux' && matrix.python-version == '3.12'
-
         run: |
           sudo apt update
           sudo apt install -y --no-install-recommends texlive texlive-science texlive-xetex ghostscript pdf2svg texlive-fonts-extra sagemath
 
+
       - name: Install poetry ${{ matrix.poetry-version }}
         run: |
           python -m ensurepip