[Temp] Hack-in the myst-parser requirement for debugging

Needed to trace what conflicts with it

Author: LecrisUT

.github/workflows/tests.yml

@@ -49,6 +49,12 @@ jobs:
       run: |
         pip install --upgrade pip
         pip install --upgrade "Sphinx${{ matrix.sphinx }}" -e .[testing]
+      if: contains(matrix.sphinx, '7.0') != true
+    - name: Install myst-nb with Sphinx ${{ matrix.sphinx }}
+      run: |
+        pip install --upgrade pip
+        pip install --upgrade "Sphinx${{ matrix.sphinx }}" "myst-parser~=2.0" -e .[testing]
+      if: contains(matrix.sphinx, '7.0')
 
     - name: Run pytest
       run: pytest --durations=10