github-actions: bump JamesIves/github-pages-deploy-action

Bumps [JamesIves/github-pages-deploy-action](https://github.com/JamesIves/github-pages-deploy-action) from 3.7.1 to 4.0.0.
- [Release notes](https://github.com/JamesIves/github-pages-deploy-action/releases)
- [Commits](JamesIves/github-pages-deploy-action@3.7.1...049a95c)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/gh-pages.yml

@@ -22,7 +22,7 @@ jobs:
         working-directory: docs/
 
       - name: Deploy Github Pages
-        uses: JamesIves/github-pages-deploy-action@3.7.1
+        uses: JamesIves/github-pages-deploy-action@4.0.0
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           BRANCH: gh-pages