Fix release workflow 403 by granting contents write permission - #8

• I provide my work under the project license.
• I grant such license of my work as is required for the purposes of future print editions to Ben Straub and Scott Chacon.

Changes

The release job failed at release creation with 403 Resource not accessible by integration due to insufficient token permissions. This updates the workflow with the minimum permission needed so release publishing can proceed.

• Workflow permission fix
  • Added explicit job-level permission to .github/workflows/release-on-merge.yml:

    jobs:
      release:
        permissions:
          contents: write

• Scope
  • No build/release logic changes; only GitHub Actions authorization scope for the existing release step.

Context