Bump JamesIves/github-pages-deploy-action from 3.6.2 to 4.6.0

Bumps [JamesIves/github-pages-deploy-action](https://github.com/jamesives/github-pages-deploy-action) from 3.6.2 to 4.6.0.
- [Release notes](https://github.com/jamesives/github-pages-deploy-action/releases)
- [Commits](JamesIves/github-pages-deploy-action@3.6.2...v4.6.0)

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

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

.github/workflows/ghpages.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Build
         run: sbt manual/makeSite
       - name: Deploy
-        uses: JamesIves/github-pages-deploy-action@3.6.2
+        uses: JamesIves/github-pages-deploy-action@v4.6.0
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           BRANCH: gh-pages