Merge pull request #7 from hyunjoonbok/dependabot/pip/notebook-6.1.5

Bump notebook from 6.0.2 to 6.1.5

Author: hyunjoonbok

requirements.txt

@@ -130,7 +130,7 @@ murmurhash==1.0.2
 nbconvert==5.6.1
 nbformat==4.4.0
 networkx==2.2
-notebook==6.0.2
+notebook==6.1.5
 numba==0.47.0
 numexpr==2.7.0
 numpy==1.16.3