Merge pull request #80 from astropy/dependabot/pip/notebook_sandbox/jwst_boxcar/notebook-6.4.1

Bump notebook from 6.1.5 to 6.4.1 in /notebook_sandbox/jwst_boxcar

Author: tepickering

notebook_sandbox/jwst_boxcar/requirements.txt

@@ -1,4 +1,4 @@
-notebook==6.1.5
+notebook==6.4.1
 jupyter_client==5.3.5
 numpy==1.19.2
 scipy #==1.5.2