Pin dependency notebook to ==6.0.3 (#8)

renovate[bot] · renovate-bot · web-flow · commit cfa9deb3e5b9 · 2020-05-20T14:34:16.000-04:00
Co-authored-by: Renovate Bot &lt;bot@renovateapp.com&gt;
diff --git a/binder/requirements.txt b/binder/requirements.txt
@@ -1,5 +1,5 @@
 -r ../requirements.txt
-notebook>=6.0
+notebook==6.0.3
 jupyter_server_proxy
 pandas
 numpy
