Update default packages

repo2docker/buildpacks/conda/environment.py-3.5.frozen.yml

@@ -75,7 +75,7 @@ dependencies:
     - idna==2.7
     - jupyterhub==0.9.4
     - mako==1.0.7
-    - notebook==5.7.4
+    - notebook==5.7.6
     - nteract-on-jupyter==1.9.6
     - pamela==0.3.0
     - python-editor==1.0.3

repo2docker/buildpacks/conda/environment.yml

@@ -1,9 +1,9 @@
 dependencies:
   - python=3.7.*
-  - ipywidgets==7.2.1
-  - jupyterlab==0.34.9
-  - nbconvert==5.4.0
-  - notebook==5.7.4
+  - ipywidgets==7.4.2
+  - jupyterlab==0.35.4
+  - nbconvert==5.4.1
+  - notebook==5.7.6
   - pip:
     - nteract_on_jupyter==2.0.0
     - jupyterhub==0.9.4