Update workflow permissions

[brondani]

Fixes

• The release workflow failed due to permissions:
  https://github.com/Open-CMSIS-Pack/cbuild2cmake/actions/runs/12350991682

Changes

• Similar to Update release.yml cpackget#405

Checklist

• 🤖 This change is covered by unit tests as required.
• 🤹 All required manual testing has been performed.
• 🛡️ Security impacts have been considered.
• 📖 All documentation updates are complete.
• 🧠 This change does not change third-party dependencies

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details

Scanned Files

[github-actions]

Test Results

  4 files  ±0   20 suites  ±0   2s ⏱️ -1s
 74 tests ±0   74 ✅ ±0  0 💤 ±0  0 ❌ ±0 
296 runs  ±0  296 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit a0ac36a. ± Comparison against base commit a3a4e41.

[codeclimate]

Code Climate has analyzed commit a0ac36a and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 88.0% (0.0% change).

View more on Code Climate.

[jkrech]

LGTM