Bump ncipollo/release-action from 1.20.0 to 1.21.0

Bumps [ncipollo/release-action](https://github.com/ncipollo/release-action) from 1.20.0 to 1.21.0.
- [Release notes](https://github.com/ncipollo/release-action/releases)
- [Commits](ncipollo/release-action@b7eabc9...339a818)

---
updated-dependencies:
- dependency-name: ncipollo/release-action
  dependency-version: 1.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -49,7 +49,7 @@ jobs:
           GEM_HOST_API_KEY=${{ secrets.GITHUB_TOKEN }} gem push --KEY github --host https://rubygems.pkg.github.com/${OWNER} ${{ env.GEM_NAME }}-${{ env.GEM_VERSION }}.gem
 
       - name: release
-        uses: ncipollo/release-action@b7eabc95ff50cbeeedec83973935c8f306dfcd0b # pin@v1.20.0
+        uses: ncipollo/release-action@339a81892b84b4eeb0f6e744e4574d79d0d9b8dd # pin@v1.21.0
         with:
           artifacts: "${{ env.GEM_NAME }}-${{ env.GEM_VERSION }}.gem"
           tag: "v${{ env.GEM_VERSION }}"