fix: use correct deployment-id input name in singularity-deploy workflow

[Copilot]

chrnorm/deployment-status@v2.0.4 expects the input parameter deployment-id (hyphen), but the workflow was passing deployment_id (underscore). The action silently ignored the unknown input, resulting in an HttpError: Not Found when attempting to update the deployment status.

Changes

• .github/workflows/singularity-deploy.yml: Rename deployment_id → deployment-id in both the success and failure chrnorm/deployment-status steps.

# Before (broken)
- uses: chrnorm/deployment-status@v2.0.4
  with:
    deployment_id: ${{ steps.deployment.outputs.deployment_id }}

# After (correct)
- uses: chrnorm/deployment-status@v2.0.4
  with:
    deployment-id: ${{ steps.deployment.outputs.deployment_id }}