Grant contents:write permission to release workflow

[Copilot]

Description

The release workflow requires contents: write permission to create GitHub releases when publishing versioned releases to NuGet. Previously configured with only contents: read, the workflow could not perform release creation operations.

Changed workflow permissions from contents: read to contents: write in .github/workflows/release.yaml.

Type of change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Refactor

How Has This Been Tested?

• YAML syntax validation
• CodeQL security scan (0 alerts)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Screenshots (if applicable)

N/A

Additional context

Addresses review feedback from PR #27. Single line change enables future GitHub release automation on version tag pushes (v*..).

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