Fix notebook CI and RTD build failures

- Update notebooks.yaml to use dependency-groups instead of optional extras
  (.[dev,test] no longer exists after PEP 735 migration)
- Add pandas.core.frame.DataFrame to nitpick_ignore in docs/conf.py
  (not in pandas intersphinx inventory, causes -W warning failure)
- Update notebooks.yaml actions to v5/v7

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: PauBadiaM

.github/workflows/notebooks.yaml

@@ -37,7 +37,7 @@ jobs:
                     ]
 
         steps:
-            - uses: actions/checkout@v4
+            - uses: actions/checkout@v5
               with:
                 filter: blob:none
                 fetch-depth: 0
@@ -47,13 +47,11 @@ jobs:
               with:
                   python-version: "3.13"
             - name: Install uv
-              uses: astral-sh/setup-uv@v6
-              with:
-                enable-cache: true
-                cache-dependency-glob: pyproject.toml
+              uses: astral-sh/setup-uv@v7
             - name: Install dependencies
               run: |
-                  uv pip install --system ${{ matrix.pip-flags }} ".[dev,test]"
+                  uv pip install --system .
+                  uv pip install --system --group dev --group test
                   uv pip install --system nbconvert ipykernel
             - name: Run ${{ matrix.notebook }} Notebook
               run: jupyter nbconvert --to notebook --execute ${{ env.NOTEBOOK_PATH }}/${{ matrix.notebook }}

docs/conf.py

@@ -137,4 +137,5 @@
     # If building the documentation fails because of a missing link that is outside your control,
     # you can add an exception to this list.
     #     ("py:class", "igraph.Graph"),
+    ("py:class", "pandas.core.frame.DataFrame"),
 ]