build(deps): bump actions/deploy-pages from 1 to 2

Bumps [actions/deploy-pages](https://github.com/actions/deploy-pages) from 1 to 2.
- [Release notes](https://github.com/actions/deploy-pages/releases)
- [Commits](actions/deploy-pages@v1...v2)

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

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

.github/workflows/ghpages.yml

@@ -54,4 +54,4 @@ jobs:
     - name: 'Deploy to GitHub Pages'
       if: github.ref_name == env.GIT_LATEST_TAG
       id: deployment
-      uses: actions/deploy-pages@v1
+      uses: actions/deploy-pages@v2