Update based on review feedback

Author: microbit-matt-hillsdon

.github/workflows/build.yml

@@ -10,7 +10,6 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: read
-      packages: write
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
@@ -19,8 +18,6 @@ jobs:
           registry-url: 'https://registry.npmjs.org'
           cache: npm
       - run: npm ci
-        env:
-          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - run: npm run test:coverage
       - run: npm run build
       - run: npm publish