chore(gha): bump actions/upload-pages-artifact from 3 to 4 (#422)

Author: dependabot[bot]

.github/workflows/deploy-documentation.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Build documentation
         uses: ./.github/actions/build-documentation
       - name: Upload artifact for GitHub Pages
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: build/docs