Investigate workflow job failing on main: test / test (job 1)

[github-actions]

🚨 Failure Summary 🚨:

• 📋 Job Name: test / test (job 1)
• 🔧 Failure in Workflow: Process new code merged to main
• 🔗 Triggered by PR: PR Link
• 👤 PR Author: @pac-guerreiro
• 🤝 Merged by: @marcaaron
• 🐛 Error Message:
  warning: Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: SimenB/github-actions-cpu-cores@31e91de. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.
  failure: Process completed with exit code 1.

⚠️ Action Required ⚠️:

🛠️ A recent merge appears to have caused a failure in the job named test / test (job 1).
This issue has been automatically created and labeled with Workflow Failure for investigation.

👀 Please look into the following:

1. Why the PR caused the job to fail?
2. Address any underlying issues.

🐛 We appreciate your help in squashing this bug!