Notify slack on scheduled test failure (#60)

.github/workflows/test_and_deploy.yml

@@ -166,8 +166,18 @@ jobs:
         run: |
           python -m pytest --color=yes -v tests/brainmapper
 
+      - name: Notify slack on scheduled failure
+        if: failure() && github.event_name == 'schedule'
+        uses: ravsamhq/notify-slack-action@v2
+        with:
+          status: ${{ job.status }} # required
+          notify_when: 'failure'
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_NOTIFYBOT_WEBHOOK_URL }} # required
+
+
   build_sdist_wheel:
-    name: Build source distribution and wheel
+    name: Build source distribution
     needs: [test, test_numba_disabled]
     if: github.event_name == 'push' && github.ref_type == 'tag'
     runs-on: ubuntu-latest