Bump notebook from 5.7.0 to 5.7.8 in /Patterns in Gothic Literature

Bumps [notebook](https://github.com/jupyter/jupyterhub) from 5.7.0 to 5.7.8.
- [Release notes](https://github.com/jupyter/jupyterhub/releases)
- [Changelog](https://github.com/jupyterhub/jupyterhub/blob/master/CHECKLIST-Release.md)
- [Commits](https://github.com/jupyter/jupyterhub/commits)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Patterns in Gothic Literature/requirements.txt

@@ -24,7 +24,7 @@ mistune==0.8.3
 nbconvert==5.4.0
 nbformat==4.4.0
 nltk==3.3
-notebook==5.7.0
+notebook==5.7.8
 numpy==1.15.2
 pandocfilters==1.4.2
 parso==0.3.1