try to upload artifact on PR

.github/workflows/builds.yml

@@ -34,12 +34,22 @@ jobs:
         make
         cat Brick.ttl
     - name: upload ttls
+      id: upload-ttls
       if: ${{ matrix.python-version }} == "3.10"
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: Brick-ontology
         path: |
           Brick.ttl
+    - name: comment artifact
+      # if the trigger is on a pull request
+      if: github.event_name == 'pull_request'
+      uses: peter-evans/create-or-update-comment@v4
+      with:
+        issue-number: ${{ github.event.number }}
+        # in the body, make a markdown link to the steps.upload-ttls.output.artifact-url
+        body: |
+          The latest build of the Brick ontology on this PR is available [here](${{ steps.upload-ttls.outputs.artifact-url }}).
     - name: Run the tests
       # -s flag: do not capture output (avoids killing test after 10 min)
       run: |