Investigate workflow job failing on main: build (Debug, true)

[github-actions]

🚨 Failure Summary 🚨:

• 📋 Job Name: build (Debug, true)
• 🔧 Failure in Workflow: Process new code merged to main
• 🔗 Triggered by PR: PR Link
• 👤 PR Author: @roryabraham
• 🤝 Merged by: @mountiny
• 🐛 Error Message:
  warning: Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/setup-java@c5195ef, gradle/actions@ac638b0. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
  warning: Unmount failed, retrying (4/10)...
  warning: Unmount failed, retrying (3/10)...
  warning: Unmount failed, retrying (2/10)...
  warning: Unmount failed, retrying (1/10)...
  warning: Skipping sticky disk commit due to previous step failures
  warning: - Step: unknown (failed)
  warning: Found 3 failed/cancelled steps in previous workflow steps
  warning: Skipping sticky disk commit due to previous step failures
  warning: - Step: unknown (failed)
  warning: Found 3 failed/cancelled steps in previous workflow steps
  failure: Process completed with exit code 1.

⚠️ Action Required ⚠️:

🛠️ A recent merge appears to have caused a failure in the job named build (Debug, true).
🔍 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.

For detailed instructions, check this SO.

🐛 We appreciate your help in squashing this bug!