Fix CI failure of `import-sample-export-gnn.ipynb`

[orazve]

Thank you for your contribution to the Graph Data Science Client project.

Before submitting this PR, please read Contributing to the Neo4j Ecosystem.

Make sure:

• [ ] You signed the Neo4j CLA (Contributor License Agreement) so that we are allowed to ship your code in our library
• [ ] Your contribution is covered by tests

[netlify[bot]]

✅ Deploy Preview for neo4j-graph-data-science-client ready!

Name	Link
🔨 Latest commit	fdcb0cc422222dbbab83794af13e132142a512a6
🔍 Latest deploy log	https://app.netlify.com/sites/neo4j-graph-data-science-client/deploys/667ad0d19aa50c0008cb721d
😎 Deploy Preview	https://deploy-preview-668--neo4j-graph-data-science-client.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.