fix: Set NPM_TOKEN to GITHUB_TOKEN for GitHub Packages authentication

The @semantic-release/npm plugin requires NPM_TOKEN environment variable for authentication, even when publishing to GitHub Packages. Set NPM_TOKEN to GITHUB_TOKEN value so the plugin can authenticate with npm.pkg.github.com registry.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: steven-pribilinskiy

.github/actions/semantic-release/action.yml

@@ -140,6 +140,7 @@ runs:
           ${{ env.EXTRA_PLUGINS }}
       env:
         GITHUB_TOKEN: ${{ inputs.GITHUB_TOKEN }}
+        NPM_TOKEN: ${{ inputs.GITHUB_TOKEN }}
         HUSKY: '0'
 
     - name: Output commit hash