Bump actions/upload-pages-artifact from 3 to 4 (#6)

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

Author: dependabot[bot]

.github/workflows/pages-deploy.yml

@@ -55,7 +55,7 @@ jobs:
             \-\-ignore-urls "/^http:\/\/127.0.0.1/,/^http:\/\/0.0.0.0/,/^http:\/\/localhost/"
 
       - name: Upload site artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: "_site${{ steps.pages.outputs.base_path }}"