[chore](deps): Bump actions/upload-pages-artifact from 3 to 4 (#894)

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

Author: dependabot[bot]

.github/workflows/docs-deploy.yml

@@ -60,7 +60,7 @@ jobs:
           make html
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: ./site