Github action npm publish use tag name

I'm migrating our existing Travis tasks to GH actions. For Travis the command below would publish to npm and use the release tag name for the npm version.

script: yarn npm-bundle && npm version $TRAVIS_BRANCH --allow-same-version -m
      "chore - release version %s [skip ci]" --allow-empty

Unfortunately changing to the below doesn't work...

        run: |
          yarn npm-bundle && npm version ${{ github.event.release.tag_name }} --allow-same-version -m "chore - release version %s [skip ci]" --allow-empty
          npm publish --access public --dry-run

Its obviously empty as npm is using the version from package.json. I've tried some other variables such as ${{ github.head_ref }}

also...

run: |
          yarn npm-bundle -m "chore - release version %s [skip ci]" --allow-empty
          npm publish --tag ${{ github.event.release.tag_name }} --allow-same-version --access public --dry-run

I have resolved the issue by refactoring to the following...

      - uses: actions/setup-node@v1
        with:
          node-version: 14.15.0
          registry-url: https://registry.npmjs.org/
      - run: yarn install
      - run: git config --global user.name "${{ github.actor }}"
      - run: git config --global user.email "github-action-${{ github.actor }}@users.noreply.github.com"
      - run: npm version ${{ github.event.release.tag_name }}
      - run: yarn npm-bundle
      - run: npm publish --access public
        env:
          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}