CI: deploy ontology

Author: DylanVanAssche

.github/workflows/build-spec.yaml

@@ -48,7 +48,7 @@ jobs:
           # but if you want to customize it:
           DESTINATION: index.html
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           # Upload entire repository
           path: '.'