Bump actions/upload-pages-artifact from 3 to 4 (#448)

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

Author: dependabot[bot]

.github/workflows/jekyll-gh-pages.yml

@@ -44,7 +44,7 @@ jobs:
           destination: ./_site
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
 
       - name: Deploy to GitHub Pages
         id: deployment