Bump notebook in /research/information_retrieval/doc2query (#366)

Bumps [notebook](http://jupyter.org) from 6.4.0 to 6.4.1.

---
updated-dependencies:
- dependency-name: notebook
  dependency-type: direct:production
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Mark Kurtz <mark@neuralmagic.com>

Author: dependabot[bot]

research/information_retrieval/doc2query/requirements.txt

@@ -56,7 +56,7 @@ nbformat==5.1.3
 nest-asyncio==1.5.1
 networkx==2.5.1
 nltk==3.6.2
-notebook==6.4.0
+notebook==6.4.1
 numpy==1.20.3
 onnx==1.7.0
 onnxruntime==1.8.0