Bump numpy from 1.17.4 to 1.22.0 in /notebooks

Bumps [numpy](https://github.com/numpy/numpy) from 1.17.4 to 1.22.0.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/HOWTO_RELEASE.rst)
- [Commits](numpy/numpy@v1.17.4...v1.22.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

notebooks/requirements.txt

@@ -7,7 +7,7 @@ arxiv==0.5.1
 imbalanced-learn==0.6.1
 nltk==3.6.6
 scipy==1.3.1
-numpy==1.17.4
+numpy==1.22.0
 ipywidgets>=7.5
 plotly==4.10.0
 tensorflow==2.8.1