chore(deps): update actions/upload-pages-artifact action to v4 (#319)

Author: renovate-bot

.github/workflows/docs.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Build docs
         run: make docs
       - name: Upload Pages artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: ./docs/public