ci: update contents permission ...

[abmusse]

to write for action-gh-release

See https://github.com/softprops/action-gh-release?tab=readme-ov-file#permissions

This should fix the 403 errors we are getting in the create-release action:

ref: https://github.com/IBM/node-odbc/actions/runs/23822593837/job/69438593291

Run softprops/action-gh-release@v2
👩‍🏭 Creating new GitHub release for tag v2.5.0-rc.0...
⚠️ GitHub release failed with status: 403
{"message":"Resource not accessible by integration","documentation_url":"https://docs.github.com/rest/releases/releases#generate-release-notes-content-for-a-release","status":"403"}
Skip retry — your GitHub token/PAT does not have the required permission to create a release
⚠️ Unexpected error fetching GitHub release for tag refs/tags/v2.5.0-rc.0: HttpError: Resource not accessible by integration - https://docs.github.com/rest/releases/releases#generate-release-notes-content-for-a-release
Error: Resource not accessible by integration - https://docs.github.com/rest/releases/releases#generate-release-notes-content-for-a-release