Build(deps): Bump nwtgck/actions-netlify from 2.1 to 3.0 (#518)

Bumps [nwtgck/actions-netlify](https://github.com/nwtgck/actions-netlify) from 2.1 to 3.0.
- [Release notes](https://github.com/nwtgck/actions-netlify/releases)
- [Changelog](https://github.com/nwtgck/actions-netlify/blob/develop/CHANGELOG.md)
- [Commits](nwtgck/actions-netlify@v2.1...v3.0)

---
updated-dependencies:
- dependency-name: nwtgck/actions-netlify
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/docs.yaml

@@ -43,7 +43,7 @@ jobs:
           name: pycalphad-documentation
           path: pycalphad-docs-html
       - name: Deploy to Netlify
-        uses: nwtgck/actions-netlify@v2.1
+        uses: nwtgck/actions-netlify@v3.0
         with:
           publish-dir: 'pycalphad-docs-html'
           production-branch: develop